A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 9435510 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 17 18 21 30 34 35 42 45 51 63 70 85 90 102 105 119 126 153 170 210 238 255 306 315 357 510 595 630 714 765 881 1,071 1,190 1,530 1,762 1,785 2,142 2,643 3,570 4,405 5,286 5,355 6,167 7,929 8,810 10,710 12,334 13,215 14,977 15,858 18,501 26,430 29,954 30,835 37,002 39,645 44,931 55,503 61,670 74,885 79,290 89,862 92,505 104,839 111,006 134,793 149,770 185,010 209,678 224,655 269,586 277,515 314,517 449,310 524,195 555,030 629,034 673,965 943,551 1,048,390 1,347,930 1,572,585 1,887,102 3,145,170 4,717,755 and 9,435,510, with no remainder.
Since 9,435,510 cannot be divided by just 1 and 9,435,510, it is not a prime number.