Q: Is 557,431 a Prime Number?
A: No, 557,431 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 557431 can be evenly divided by 1 7 79,633 and 557,431, with no remainder.
Since 557,431 cannot be divided by just 1 and 557,431, it is not a prime number.