88072531 has 4 divisors (see below), whose sum is σ = 89062200. Its totient is φ = 87082864.

The previous prime is 88072513. The next prime is 88072541. The reversal of 88072531 is 13527088.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88072531 - 2⁵ = 88072499 is a prime.

It is a super-2 number, since 2×88072531² = 15513541433491922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88072511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494701 + ... + 494878.

It is an arithmetic number, because the mean of its divisors is an integer number (22265550).

Almost surely, 2^88072531 is an apocalyptic number.

88072531 is a deficient number, since it is larger than the sum of its proper divisors (989669).

88072531 is an equidigital number, since it uses as much as digits as its factorization.

88072531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989668.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 88072531 is about 9384.6966386772. The cubic root of 88072531 is about 444.9181872069.

The spelling of 88072531 in words is "eighty-eight million, seventy-two thousand, five hundred thirty-one".