Q: Is 551,521 a Prime Number?
A: No, 551,521 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 551521 can be evenly divided by 1 31 17,791 and 551,521, with no remainder.
Since 551,521 cannot be divided by just 1 and 551,521, it is not a prime number.