A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 7572000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 75 80 96 100 120 125 150 160 200 240 250 300 375 400 480 500 600 631 750 800 1,000 1,200 1,262 1,500 1,893 2,000 2,400 2,524 3,000 3,155 3,786 4,000 5,048 6,000 6,310 7,572 9,465 10,096 12,000 12,620 15,144 15,775 18,930 20,192 25,240 30,288 31,550 37,860 47,325 50,480 60,576 63,100 75,720 78,875 94,650 100,960 126,200 151,440 157,750 189,300 236,625 252,400 302,880 315,500 378,600 473,250 504,800 631,000 757,200 946,500 1,262,000 1,514,400 1,893,000 2,524,000 3,786,000 and 7,572,000, with no remainder.
Since 7,572,000 cannot be divided by just 1 and 7,572,000, it is not a prime number.