Q: Is 558,406 a Prime Number?
A: No, 558,406 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 558406 can be evenly divided by 1 2 279,203 and 558,406, with no remainder.
Since 558,406 cannot be divided by just 1 and 558,406, it is not a prime number.