A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 5020440 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 17 20 23 24 30 34 40 46 51 60 68 69 85 92 102 107 115 120 136 138 170 184 204 214 230 255 276 321 340 345 391 408 428 460 510 535 552 642 680 690 782 856 920 1,020 1,070 1,173 1,284 1,380 1,564 1,605 1,819 1,955 2,040 2,140 2,346 2,461 2,568 2,760 3,128 3,210 3,638 3,910 4,280 4,692 4,922 5,457 5,865 6,420 7,276 7,383 7,820 9,095 9,384 9,844 10,914 11,730 12,305 12,840 14,552 14,766 15,640 18,190 19,688 21,828 23,460 24,610 27,285 29,532 36,380 36,915 41,837 43,656 46,920 49,220 54,570 59,064 72,760 73,830 83,674 98,440 109,140 125,511 147,660 167,348 209,185 218,280 251,022 295,320 334,696 418,370 502,044 627,555 836,740 1,004,088 1,255,110 1,673,480 2,510,220 and 5,020,440, with no remainder.
Since 5,020,440 cannot be divided by just 1 and 5,020,440, it is not a prime number.