Q: Is 557,240 a Prime Number?
A: No, 557,240 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 557240 can be evenly divided by 1 2 4 5 8 10 20 40 13,931 27,862 55,724 69,655 111,448 139,310 278,620 and 557,240, with no remainder.
Since 557,240 cannot be divided by just 1 and 557,240, it is not a prime number.