A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5097120 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 37 40 41 42 48 56 60 70 74 80 82 84 96 105 111 112 120 123 140 148 160 164 168 185 205 210 222 224 240 246 259 280 287 296 328 336 370 410 420 444 480 492 518 555 560 574 592 615 656 672 740 777 820 840 861 888 984 1,036 1,110 1,120 1,148 1,184 1,230 1,295 1,312 1,435 1,480 1,517 1,554 1,640 1,680 1,722 1,776 1,968 2,072 2,220 2,296 2,460 2,590 2,870 2,960 3,034 3,108 3,280 3,360 3,444 3,552 3,885 3,936 4,144 4,305 4,440 4,551 4,592 4,920 5,180 5,740 5,920 6,068 6,216 6,560 6,888 7,585 7,770 8,288 8,610 8,880 9,102 9,184 9,840 10,360 10,619 11,480 12,136 12,432 13,776 15,170 15,540 17,220 17,760 18,204 19,680 20,720 21,238 22,755 22,960 24,272 24,864 27,552 30,340 31,080 31,857 34,440 36,408 41,440 42,476 45,510 45,920 48,544 53,095 60,680 62,160 63,714 68,880 72,816 84,952 91,020 106,190 121,360 124,320 127,428 137,760 145,632 159,285 169,904 182,040 212,380 242,720 254,856 318,570 339,808 364,080 424,760 509,712 637,140 728,160 849,520 1,019,424 1,274,280 1,699,040 2,548,560 and 5,097,120, with no remainder.
Since 5,097,120 cannot be divided by just 1 and 5,097,120, it is not a prime number.