Q: Is 557,406 a Prime Number?
A: No, 557,406 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 557406 can be evenly divided by 1 2 3 6 9 18 173 179 346 358 519 537 1,038 1,074 1,557 1,611 3,114 3,222 30,967 61,934 92,901 185,802 278,703 and 557,406, with no remainder.
Since 557,406 cannot be divided by just 1 and 557,406, it is not a prime number.