Q: Is 16,551 a Prime Number?
A: No, 16,551 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 16551 can be evenly divided by 1 3 9 27 613 1,839 5,517 and 16,551, with no remainder.
Since 16,551 cannot be divided by just 1 and 16,551, it is not a prime number.