Q: Is 1,555,264 a Prime Number?
A: No, 1,555,264 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 1555264 can be evenly divided by 1 2 4 8 16 19 32 38 64 76 152 304 608 1,216 1,279 2,558 5,116 10,232 20,464 24,301 40,928 48,602 81,856 97,204 194,408 388,816 777,632 and 1,555,264, with no remainder.
Since 1,555,264 cannot be divided by just 1 and 1,555,264, it is not a prime number.