Q: Is 555,628 a Prime Number?
A: No, 555,628 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 555628 can be evenly divided by 1 2 4 17 34 68 8,171 16,342 32,684 138,907 277,814 and 555,628, with no remainder.
Since 555,628 cannot be divided by just 1 and 555,628, it is not a prime number.