75539313 has 12 divisors (see below), whose sum is σ = 115530948. Its totient is φ = 47397120.

The previous prime is 75539251. The next prime is 75539323. The reversal of 75539313 is 31393557.

It is a happy number.

75539313 is a `hidden beast` number, since 7 + 553 + 93 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67519089 + 8020224 = 8217^2 + 2832^2 .

It is not a de Polignac number, because 75539313 - 2⁶ = 75539249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75539323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246708 + ... + 247013.

It is an arithmetic number, because the mean of its divisors is an integer number (9627579).

Almost surely, 2^75539313 is an apocalyptic number.

It is an amenable number.

75539313 is a deficient number, since it is larger than the sum of its proper divisors (39991635).

75539313 is a wasteful number, since it uses less digits than its factorization.

75539313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493744 (or 493741 counting only the distinct ones).

The product of its digits is 42525, while the sum is 36.

The square root of 75539313 is about 8691.3355130268. The cubic root of 75539313 is about 422.7247509325.

The spelling of 75539313 in words is "seventy-five million, five hundred thirty-nine thousand, three hundred thirteen".