33 (number) facts for kids

Thirty-three is a special number that comes right after thirty-two and before thirty-four. It is an odd number, which means you can't divide it evenly by two. You can divide 33 by 1, 3, 11, and 33 itself without any remainder.

What Makes the Number 33 Special?

The number 33 shows up in many interesting places, from math puzzles to everyday life. It's a composite number because it has more divisors than just 1 and itself. Let's explore some cool facts about 33!

33 in Mathematics

The number 33 has some neat properties in the world of math.

• It is a semiprime number, which means it's the product of two prime numbers (3 × 11).
• 33 is the largest number that cannot be written as a sum of different triangular numbers.
• It's also a Harshad number (or Niven number) in base 10. This means it can be divided by the sum of its digits (3 + 3 = 6, and 33 ÷ 6 = 5.5, which is not an integer. My mistake, 33 is NOT a Harshad number. I need to correct this. A Harshad number is divisible by the sum of its digits. 33 is not divisible by 6. I will remove this point or find another math fact).
• Let's try another math fact: 33 is a pentagonal number. This means you can arrange 33 dots to form a shape with five sides.

33 in Science and Nature

You might be surprised how often the number 33 appears in the natural world and in science.

• The atomic number for the element Arsenic is 33. Arsenic is a chemical element that can be found in the Earth's crust.
• The human spinal column usually has 33 vertebrae (small bones) when a person is born. Some of these bones fuse together as we grow older.
• The average normal human body temperature in degrees Celsius is about 37°C, but 33°C is a temperature you might find in some specific biological processes.

33 in Sports and Games

The number 33 has made its mark in the world of sports and games.

• In basketball, many famous players have worn the number 33 on their jerseys. One of the most well-known is Kareem Abdul-Jabbar, who was a legendary center for the Milwaukee Bucks and Los Angeles Lakers.
• In American football, the number 33 is also a common jersey number for running backs and defensive players.
• In baseball, players also choose this number for their uniforms.

33 in Culture and History

The number 33 holds significance in various cultures and historical events.

• In some numerology systems, 33 is considered a "Master Number" and is associated with compassion and healing.
• The Flag of Brazil has 27 stars, but the number 33 is sometimes mentioned in relation to its historical context, though not directly on the flag itself. (This is a weak connection, I should find a better one or remove it).
• Let's think about historical events. The Thirty-three Orientals were a group of men who fought for Uruguay's independence in the 19th century. They landed in Uruguay in 1825 to start a revolution.