A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4451700 can be evenly divided by 1 2 3 4 5 6 10 11 12 15 19 20 22 25 30 33 38 44 50 55 57 60 66 71 75 76 95 100 110 114 132 142 150 165 190 209 213 220 228 275 284 285 300 330 355 380 418 426 475 550 570 627 660 710 781 825 836 852 950 1,045 1,065 1,100 1,140 1,254 1,349 1,420 1,425 1,562 1,650 1,775 1,900 2,090 2,130 2,343 2,508 2,698 2,850 3,124 3,135 3,300 3,550 3,905 4,047 4,180 4,260 4,686 5,225 5,325 5,396 5,700 6,270 6,745 7,100 7,810 8,094 9,372 10,450 10,650 11,715 12,540 13,490 14,839 15,620 15,675 16,188 19,525 20,235 20,900 21,300 23,430 26,980 29,678 31,350 33,725 39,050 40,470 44,517 46,860 58,575 59,356 62,700 67,450 74,195 78,100 80,940 89,034 101,175 117,150 134,900 148,390 178,068 202,350 222,585 234,300 296,780 370,975 404,700 445,170 741,950 890,340 1,112,925 1,483,900 2,225,850 and 4,451,700, with no remainder.
Since 4,451,700 cannot be divided by just 1 and 4,451,700, it is not a prime number.