Q: Is 509,021 a Prime Number?
A: No, 509,021 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 509021 can be evenly divided by 1 151 3,371 and 509,021, with no remainder.
Since 509,021 cannot be divided by just 1 and 509,021, it is not a prime number.