A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 6024528 can be evenly divided by 1 2 3 4 6 8 9 12 16 17 18 23 24 34 36 46 48 51 68 69 72 92 102 107 136 138 144 153 184 204 207 214 272 276 306 321 368 391 408 414 428 552 612 642 782 816 828 856 963 1,104 1,173 1,224 1,284 1,564 1,656 1,712 1,819 1,926 2,346 2,448 2,461 2,568 3,128 3,312 3,519 3,638 3,852 4,692 4,922 5,136 5,457 6,256 7,038 7,276 7,383 7,704 9,384 9,844 10,914 14,076 14,552 14,766 15,408 16,371 18,768 19,688 21,828 22,149 28,152 29,104 29,532 32,742 39,376 41,837 43,656 44,298 56,304 59,064 65,484 83,674 87,312 88,596 118,128 125,511 130,968 167,348 177,192 251,022 261,936 334,696 354,384 376,533 502,044 669,392 753,066 1,004,088 1,506,132 2,008,176 3,012,264 and 6,024,528, with no remainder.
Since 6,024,528 cannot be divided by just 1 and 6,024,528, it is not a prime number.