Q: Is 551,161 a Prime Number?
A: No, 551,161 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 551161 can be evenly divided by 1 13 42,397 and 551,161, with no remainder.
Since 551,161 cannot be divided by just 1 and 551,161, it is not a prime number.