86529531 has 16 divisors (see below), whose sum is σ = 126028800. Its totient is φ = 52372320.

The previous prime is 86529523. The next prime is 86529539. The reversal of 86529531 is 13592568.

It is an interprime number because it is at equal distance from previous prime (86529523) and next prime (86529539).

It is not a de Polignac number, because 86529531 - 2³ = 86529523 is a prime.

It is a super-2 number, since 2×86529531² = 14974719470159922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86529531.

It is not an unprimeable number, because it can be changed into a prime (86529539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34870 + ... + 37268.

It is an arithmetic number, because the mean of its divisors is an integer number (7876800).

Almost surely, 2^86529531 is an apocalyptic number.

86529531 is a deficient number, since it is larger than the sum of its proper divisors (39499269).

86529531 is a wasteful number, since it uses less digits than its factorization.

86529531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506.

The product of its digits is 64800, while the sum is 39.

The square root of 86529531 is about 9302.1250797869. The cubic root of 86529531 is about 442.3045937310.

The spelling of 86529531 in words is "eighty-six million, five hundred twenty-nine thousand, five hundred thirty-one".