Q: Is 21,562 a Prime Number?
A: No, 21,562 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 21562 can be evenly divided by 1 2 10,781 and 21,562, with no remainder.
Since 21,562 cannot be divided by just 1 and 21,562, it is not a prime number.