89155531 has 8 divisors (see below), whose sum is σ = 95237424. Its totient is φ = 83166720.

The previous prime is 89155519. The next prime is 89155537. The reversal of 89155531 is 13555198.

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

It is not a de Polignac number, because 89155531 - 2⁷ = 89155403 is a prime.

It is a super-2 number, since 2×89155531² = 15897417415783922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89155537) 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, 21285 + ... + 25126.

It is an arithmetic number, because the mean of its divisors is an integer number (11904678).

Almost surely, 2^89155531 is an apocalyptic number.

89155531 is a deficient number, since it is larger than the sum of its proper divisors (6081893).

89155531 is a wasteful number, since it uses less digits than its factorization.

89155531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46541.

The product of its digits is 27000, while the sum is 37.

The square root of 89155531 is about 9442.2206604167. The cubic root of 89155531 is about 446.7344354614.

The spelling of 89155531 in words is "eighty-nine million, one hundred fifty-five thousand, five hundred thirty-one".