75512313 has 6 divisors (see below), whose sum is σ = 109073354. Its totient is φ = 50341536.

The previous prime is 75512279. The next prime is 75512369. The reversal of 75512313 is 31321557.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 18766224 = 7533^2 + 4332^2 .

It is not a de Polignac number, because 75512313 - 2⁸ = 75512057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75512383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4195120 + ... + 4195137.

Almost surely, 2^75512313 is an apocalyptic number.

It is an amenable number.

75512313 is a deficient number, since it is larger than the sum of its proper divisors (33561041).

75512313 is a wasteful number, since it uses less digits than its factorization.

75512313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390263 (or 8390260 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 75512313 is about 8689.7821031370. The cubic root of 75512313 is about 422.6743801258.

The spelling of 75512313 in words is "seventy-five million, five hundred twelve thousand, three hundred thirteen".