86456531 has 24 divisors (see below), whose sum is σ = 105787440. Its totient is φ = 70362432.

The previous prime is 86456521. The next prime is 86456533. The reversal of 86456531 is 13565468.

It is not a de Polignac number, because 86456531 - 2⁶ = 86456467 is a prime.

It is a super-2 number, since 2×86456531² = 14949463505107922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86456533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77405 + ... + 78513.

It is an arithmetic number, because the mean of its divisors is an integer number (4407810).

Almost surely, 2^86456531 is an apocalyptic number.

86456531 is a deficient number, since it is larger than the sum of its proper divisors (19330909).

86456531 is a wasteful number, since it uses less digits than its factorization.

86456531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1196 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 86456531 is about 9298.2004172851. The cubic root of 86456531 is about 442.1801764015.

The spelling of 86456531 in words is "eighty-six million, four hundred fifty-six thousand, five hundred thirty-one".