A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5110600 can be evenly divided by 1 2 4 5 8 10 11 20 22 23 25 40 44 46 50 55 88 92 100 101 110 115 184 200 202 220 230 253 275 404 440 460 505 506 550 575 808 920 1,010 1,012 1,100 1,111 1,150 1,265 2,020 2,024 2,200 2,222 2,300 2,323 2,525 2,530 4,040 4,444 4,600 4,646 5,050 5,060 5,555 6,325 8,888 9,292 10,100 10,120 11,110 11,615 12,650 18,584 20,200 22,220 23,230 25,300 25,553 27,775 44,440 46,460 50,600 51,106 55,550 58,075 92,920 102,212 111,100 116,150 127,765 204,424 222,200 232,300 255,530 464,600 511,060 638,825 1,022,120 1,277,650 2,555,300 and 5,110,600, with no remainder.
Since 5,110,600 cannot be divided by just 1 and 5,110,600, it is not a prime number.