Q: Is 556,978 a Prime Number?
A: No, 556,978 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 556978 can be evenly divided by 1 2 278,489 and 556,978, with no remainder.
Since 556,978 cannot be divided by just 1 and 556,978, it is not a prime number.