The number 5,536,608 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 32 33 42 44 48 49 56 66 77 84 88 96 98 107 112 132 147 154 168 176 196 214 224 231 264 294 308 321 336 352 392 428 462 528 539 588 616 642 672 749 784 856 924 1,056 1,078 1,176 1,177 1,232 1,284 1,498 1,568 1,617 1,712 1,848 2,156 2,247 2,352 2,354 2,464 2,568 2,996 3,234 3,424 3,531 3,696 4,312 4,494 4,704 4,708 5,136 5,243 5,992 6,468 7,062 7,392 8,239 8,624 8,988 9,416 10,272 10,486 11,984 12,936 14,124 15,729 16,478 17,248 17,976 18,832 20,972 23,968 24,717 25,872 28,248 31,458 32,956 35,952 37,664 41,944 49,434 51,744 56,496 57,673 62,916 65,912 71,904 83,888 98,868 112,992 115,346 125,832 131,824 167,776 173,019 197,736 230,692 251,664 263,648 346,038 395,472 461,384 503,328 692,076 790,944 922,768 1,384,152 1,845,536 2,768,304 and 5,536,608, with no remainder.
Since 5,536,608 cannot be divided by just 1 and 5,536,608, it is a composite number.