Q: Is 21,573 a Composite Number?

 A: Yes, 21,573 is a composite number.

Why is 21,573 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 21,573 can be evenly divided by 1 3 9 17 27 47 51 141 153 423 459 799 1,269 2,397 7,191 and 21,573, with no remainder.

Since 21,573 cannot be divided by just 1 and 21,573, it is a composite number.


More Examples

Number 21,57121,57221,57421,575
Composite? yesyesyesyes
  • All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

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