Q: Is 561,512 a Prime Number?
A: No, 561,512 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 561512 can be evenly divided by 1 2 4 7 8 14 28 37 56 74 148 259 271 296 518 542 1,036 1,084 1,897 2,072 2,168 3,794 7,588 10,027 15,176 20,054 40,108 70,189 80,216 140,378 280,756 and 561,512, with no remainder.
Since 561,512 cannot be divided by just 1 and 561,512, it is not a prime number.