47 (number) facts for kids
Forty-seven is a number. It comes right after forty-six and before forty-eight. It is an odd number, which means you can't divide it evenly by two.
Forty-seven is also special because it is a prime number. A prime number is a whole number greater than 1 that has only two factors (divisors): 1 and itself. This means you can only divide 47 by 1 and 47 to get a whole number. It's the 15th prime number, following 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, and 43.
What Makes 47 Special?
Prime Number Power
As we learned, 47 is a prime number. Prime numbers are like the building blocks of all other numbers. They are very important in mathematics and are used in many areas, including cryptography, which is the science of keeping information secret and safe.
In Science and Nature
- In chemistry, 47 is the atomic number of silver (Ag). This means that every atom of silver has 47 protons in its center. Silver is a valuable metal used in jewelry, coins, and electronics.
- The human body has 46 chromosomes, but sometimes people can have 47 chromosomes due to a genetic condition like Down syndrome.
In Pop Culture
The number 47 has appeared in many movies, TV shows, and books. Sometimes it's just a random number, but other times it's used as an "in-joke" or a special reference for fans. For example, in the TV show Star Trek, the number 47 appears very often in different ways. This started as a running joke among the writers and became a fun detail for viewers to spot.
See also
