Q: Is 507,561 a Prime Number?
A: No, 507,561 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 507561 can be evenly divided by 1 3 367 461 1,101 1,383 169,187 and 507,561, with no remainder.
Since 507,561 cannot be divided by just 1 and 507,561, it is not a prime number.