A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5044320 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 32 36 40 45 48 60 62 72 80 90 93 96 113 120 124 144 155 160 180 186 226 240 248 279 288 310 339 360 372 452 465 480 496 558 565 620 678 720 744 904 930 992 1,017 1,116 1,130 1,240 1,356 1,395 1,440 1,488 1,695 1,808 1,860 2,034 2,232 2,260 2,480 2,712 2,790 2,976 3,390 3,503 3,616 3,720 4,068 4,464 4,520 4,960 5,085 5,424 5,580 6,780 7,006 7,440 8,136 8,928 9,040 10,170 10,509 10,848 11,160 13,560 14,012 14,880 16,272 17,515 18,080 20,340 21,018 22,320 27,120 28,024 31,527 32,544 35,030 40,680 42,036 44,640 52,545 54,240 56,048 63,054 70,060 81,360 84,072 105,090 112,096 126,108 140,120 157,635 162,720 168,144 210,180 252,216 280,240 315,270 336,288 420,360 504,432 560,480 630,540 840,720 1,008,864 1,261,080 1,681,440 2,522,160 and 5,044,320, with no remainder.
Since 5,044,320 cannot be divided by just 1 and 5,044,320, it is not a prime number.