Q: Is 557,404 a Prime Number?
A: No, 557,404 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 557404 can be evenly divided by 1 2 4 331 421 662 842 1,324 1,684 139,351 278,702 and 557,404, with no remainder.
Since 557,404 cannot be divided by just 1 and 557,404, it is not a prime number.