86101581 has 16 divisors (see below), whose sum is σ = 120502656. Its totient is φ = 54580416.

The previous prime is 86101579. The next prime is 86101621. The reversal of 86101581 is 18510168.

It is a happy number.

It is not a de Polignac number, because 86101581 - 2¹ = 86101579 is a prime.

It is a super-2 number, since 2×86101581² = 14826964501399122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86101501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8331 + ... + 15543.

It is an arithmetic number, because the mean of its divisors is an integer number (7531416).

Almost surely, 2^86101581 is an apocalyptic number.

It is an amenable number.

86101581 is a deficient number, since it is larger than the sum of its proper divisors (34401075).

86101581 is a wasteful number, since it uses less digits than its factorization.

86101581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7412.

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 86101581 is about 9279.0937596298. The cubic root of 86101581 is about 441.5742181884.

The spelling of 86101581 in words is "eighty-six million, one hundred one thousand, five hundred eighty-one".