86530091 has 4 divisors (see below), whose sum is σ = 86842752. Its totient is φ = 86217432.

The previous prime is 86530069. The next prime is 86530109. The reversal of 86530091 is 19003568.

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

It is a cyclic number.

It is not a de Polignac number, because 86530091 - 2⁶ = 86530027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86530001) 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, 155915 + ... + 156468.

It is an arithmetic number, because the mean of its divisors is an integer number (21710688).

Almost surely, 2^86530091 is an apocalyptic number.

86530091 is a deficient number, since it is larger than the sum of its proper divisors (312661).

86530091 is a wasteful number, since it uses less digits than its factorization.

86530091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312660.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 86530091 is about 9302.1551803870. The cubic root of 86530091 is about 442.3055478948.

The spelling of 86530091 in words is "eighty-six million, five hundred thirty thousand, ninety-one".