76531 has 12 divisors (see below), whose sum is σ = 97552. Its totient is φ = 58464.

The previous prime is 76519. The next prime is 76537. The reversal of 76531 is 13567.

It is not a de Polignac number, because 76531 - 2⁷ = 76403 is a prime.

It is a super-2 number, since 2×76531² = 11713987922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 5 and base 10.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (76537) 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, 2625 + ... + 2653.

2⁷⁶⁵³¹ is an apocalyptic number.

76531 is a deficient number, since it is larger than the sum of its proper divisors (21021).

76531 is a wasteful number, since it uses less digits than its factorization.

76531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 49 counting only the distinct ones).

The product of its digits is 630, while the sum is 22.

The square root of 76531 is about 276.6423684109. The cubic root of 76531 is about 42.4566570812.

The spelling of 76531 in words is "seventy-six thousand, five hundred thirty-one".