Q: Is 551,401 a Prime Number?
A: No, 551,401 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 551401 can be evenly divided by 1 193 2,857 and 551,401, with no remainder.
Since 551,401 cannot be divided by just 1 and 551,401, it is not a prime number.