Q: Is 5,556,401 a Prime Number?
A: No, 5,556,401 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 5556401 can be evenly divided by 1 37 263 571 9,731 21,127 150,173 and 5,556,401, with no remainder.
Since 5,556,401 cannot be divided by just 1 and 5,556,401, it is not a prime number.