The number 4,515,000 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 25 28 30 35 40 42 43 50 56 60 70 75 84 86 100 105 120 125 129 140 150 168 172 175 200 210 215 250 258 280 300 301 344 350 375 420 430 500 516 525 600 602 625 645 700 750 840 860 875 903 1,000 1,032 1,050 1,075 1,204 1,250 1,290 1,400 1,500 1,505 1,720 1,750 1,806 1,875 2,100 2,150 2,408 2,500 2,580 2,625 3,000 3,010 3,225 3,500 3,612 3,750 4,200 4,300 4,375 4,515 5,000 5,160 5,250 5,375 6,020 6,450 7,000 7,224 7,500 7,525 8,600 8,750 9,030 10,500 10,750 12,040 12,900 13,125 15,000 15,050 16,125 17,500 18,060 21,000 21,500 22,575 25,800 26,250 26,875 30,100 32,250 35,000 36,120 37,625 43,000 45,150 52,500 53,750 60,200 64,500 75,250 80,625 90,300 105,000 107,500 112,875 129,000 150,500 161,250 180,600 188,125 215,000 225,750 301,000 322,500 376,250 451,500 564,375 645,000 752,500 903,000 1,128,750 1,505,000 2,257,500 and 4,515,000, with no remainder.
Since 4,515,000 cannot be divided by just 1 and 4,515,000, it is a composite number.