75540531 has 16 divisors (see below), whose sum is σ = 110492928. Its totient is φ = 45525600.

The previous prime is 75540527. The next prime is 75540539. The reversal of 75540531 is 13504557.

It is not a de Polignac number, because 75540531 - 2² = 75540527 is a prime.

It is a super-2 number, since 2×75540531² = 11412743647523922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75540539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351 + ... + 12296.

It is an arithmetic number, because the mean of its divisors is an integer number (6905808).

Almost surely, 2^75540531 is an apocalyptic number.

75540531 is a deficient number, since it is larger than the sum of its proper divisors (34952397).

75540531 is a wasteful number, since it uses less digits than its factorization.

75540531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12842.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 75540531 is about 8691.4055825281. The cubic root of 75540531 is about 422.7270229326.

The spelling of 75540531 in words is "seventy-five million, five hundred forty thousand, five hundred thirty-one".