Q: Is 5,575,556 a Prime Number?
A: No, 5,575,556 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 5575556 can be evenly divided by 1 2 4 7 14 28 107 214 428 749 1,498 1,861 2,996 3,722 7,444 13,027 26,054 52,108 199,127 398,254 796,508 1,393,889 2,787,778 and 5,575,556, with no remainder.
Since 5,575,556 cannot be divided by just 1 and 5,575,556, it is not a prime number.