Q: Is 557,409 a Prime Number?
A: No, 557,409 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 557409 can be evenly divided by 1 3 29 43 87 129 149 447 1,247 3,741 4,321 6,407 12,963 19,221 185,803 and 557,409, with no remainder.
Since 557,409 cannot be divided by just 1 and 557,409, it is not a prime number.