89531 has 8 divisors (see below), whose sum is σ = 98784. Its totient is φ = 80640.

The previous prime is 89527. The next prime is 89533. The reversal of 89531 is 13598.

89531 = 35³ + 36³.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89531 - 2² = 89527 is a prime.

It is a super-2 number, since 2×89531² = 16031599922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89531.

It is not an unprimeable number, because it can be changed into a prime (89533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 875 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (12348).

2⁸⁹⁵³¹ is an apocalyptic number.

89531 is a deficient number, since it is larger than the sum of its proper divisors (9253).

89531 is a wasteful number, since it uses less digits than its factorization.

89531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181.

The product of its digits is 1080, while the sum is 26.

The square root of 89531 is about 299.2173123334. The cubic root of 89531 is about 44.7360681952.

The spelling of 89531 in words is "eighty-nine thousand, five hundred thirty-one".