Q: Is 520,401 a Prime Number?
A: No, 520,401 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 520401 can be evenly divided by 1 3 7 21 24,781 74,343 173,467 and 520,401, with no remainder.
Since 520,401 cannot be divided by just 1 and 520,401, it is not a prime number.