89166531 has 4 divisors (see below), whose sum is σ = 118888712. Its totient is φ = 59444352.

The previous prime is 89166521. The next prime is 89166533. The reversal of 89166531 is 13566198.

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

It is not a de Polignac number, because 89166531 - 2⁹ = 89166019 is a prime.

It is a super-2 number, since 2×89166531² = 15901340501147922, 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 89166531.

It is not an unprimeable number, because it can be changed into a prime (89166533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14861086 + ... + 14861091.

It is an arithmetic number, because the mean of its divisors is an integer number (29722178).

Almost surely, 2^89166531 is an apocalyptic number.

89166531 is a deficient number, since it is larger than the sum of its proper divisors (29722181).

89166531 is a wasteful number, since it uses less digits than its factorization.

89166531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29722180.

The product of its digits is 38880, while the sum is 39.

The square root of 89166531 is about 9442.8031325449. The cubic root of 89166531 is about 446.7528073884.

The spelling of 89166531 in words is "eighty-nine million, one hundred sixty-six thousand, five hundred thirty-one".