A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9524550 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 25 30 35 42 47 50 70 75 94 105 141 150 175 193 210 235 282 329 350 386 470 525 579 658 705 965 987 1,050 1,158 1,175 1,351 1,410 1,645 1,930 1,974 2,350 2,702 2,895 3,290 3,525 4,053 4,825 4,935 5,790 6,755 7,050 8,106 8,225 9,071 9,650 9,870 13,510 14,475 16,450 18,142 20,265 24,675 27,213 28,950 33,775 40,530 45,355 49,350 54,426 63,497 67,550 90,710 101,325 126,994 136,065 190,491 202,650 226,775 272,130 317,485 380,982 453,550 634,970 680,325 952,455 1,360,650 1,587,425 1,904,910 3,174,850 4,762,275 and 9,524,550, with no remainder.
Since 9,524,550 cannot be divided by just 1 and 9,524,550, it is not a prime number.