Q: Is 555,500 a Prime Number?
A: No, 555,500 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 555500 can be evenly divided by 1 2 4 5 10 11 20 22 25 44 50 55 100 101 110 125 202 220 250 275 404 500 505 550 1,010 1,100 1,111 1,375 2,020 2,222 2,525 2,750 4,444 5,050 5,500 5,555 10,100 11,110 12,625 22,220 25,250 27,775 50,500 55,550 111,100 138,875 277,750 and 555,500, with no remainder.
Since 555,500 cannot be divided by just 1 and 555,500, it is not a prime number.