86522491 has 8 divisors (see below), whose sum is σ = 94595904. Its totient is φ = 78483720.

The previous prime is 86522483. The next prime is 86522549. The reversal of 86522491 is 19422568.

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 86522491 - 2³ = 86522483 is a prime.

It is a super-2 number, since 2×86522491² = 14972282897690162, 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 86522491.

It is not an unprimeable number, because it can be changed into a prime (86522411) 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, 3285 + ... + 13558.

It is an arithmetic number, because the mean of its divisors is an integer number (11824488).

Almost surely, 2^86522491 is an apocalyptic number.

86522491 is a deficient number, since it is larger than the sum of its proper divisors (8073413).

86522491 is a wasteful number, since it uses less digits than its factorization.

86522491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17321.

The product of its digits is 34560, while the sum is 37.

The square root of 86522491 is about 9301.7466639336. The cubic root of 86522491 is about 442.2925981777.

The spelling of 86522491 in words is "eighty-six million, five hundred twenty-two thousand, four hundred ninety-one".