86522881 has 4 divisors (see below), whose sum is σ = 86673412. Its totient is φ = 86372352.

The previous prime is 86522869. The next prime is 86522893. The reversal of 86522881 is 18822568.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (86522869) and next prime (86522893).

It can be written as a sum of positive squares in 2 ways, for example, as 53056656 + 33466225 = 7284^2 + 5785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86522881 is a prime.

It is a super-2 number, since 2×86522881² = 14972417873080322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86522831) 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, 74400 + ... + 75553.

It is an arithmetic number, because the mean of its divisors is an integer number (21668353).

Almost surely, 2^86522881 is an apocalyptic number.

It is an amenable number.

86522881 is a deficient number, since it is larger than the sum of its proper divisors (150531).

86522881 is a wasteful number, since it uses less digits than its factorization.

86522881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150530.

The product of its digits is 61440, while the sum is 40.

The square root of 86522881 is about 9301.7676277146. The cubic root of 86522881 is about 442.2932627212.

The spelling of 86522881 in words is "eighty-six million, five hundred twenty-two thousand, eight hundred eighty-one".