A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4513152 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 23 24 28 32 42 46 48 56 64 69 73 84 92 96 112 128 138 146 161 168 184 192 219 224 276 292 322 336 368 384 438 448 483 511 552 584 644 672 736 876 896 966 1,022 1,104 1,168 1,288 1,344 1,472 1,533 1,679 1,752 1,932 2,044 2,208 2,336 2,576 2,688 2,944 3,066 3,358 3,504 3,864 4,088 4,416 4,672 5,037 5,152 6,132 6,716 7,008 7,728 8,176 8,832 9,344 10,074 10,304 11,753 12,264 13,432 14,016 15,456 16,352 20,148 20,608 23,506 24,528 26,864 28,032 30,912 32,704 35,259 40,296 47,012 49,056 53,728 61,824 65,408 70,518 80,592 94,024 98,112 107,456 141,036 161,184 188,048 196,224 214,912 282,072 322,368 376,096 564,144 644,736 752,192 1,128,288 1,504,384 2,256,576 and 4,513,152, with no remainder.
Since 4,513,152 cannot be divided by just 1 and 4,513,152, it is not a prime number.