75500312 has 16 divisors (see below), whose sum is σ = 141787800. Its totient is φ = 37690240.

The previous prime is 75500309. The next prime is 75500317. The reversal of 75500312 is 21300557.

It is a super-2 number, since 2×75500312² = 11400594224194688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75500317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889 + ... + 12432.

Almost surely, 2^75500312 is an apocalyptic number.

It is an amenable number.

75500312 is a deficient number, since it is larger than the sum of its proper divisors (66287488).

75500312 is a wasteful number, since it uses less digits than its factorization.

75500312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986 (or 14982 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 75500312 is about 8689.0915520554. The cubic root of 75500312 is about 422.6519873805.

Adding to 75500312 its reverse (21300557), we get a palindrome (96800869).

The spelling of 75500312 in words is "seventy-five million, five hundred thousand, three hundred twelve".