Q: Is 509,566 a Prime Number?
A: No, 509,566 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 509566 can be evenly divided by 1 2 254,783 and 509,566, with no remainder.
Since 509,566 cannot be divided by just 1 and 509,566, it is not a prime number.