86544131 has 4 divisors (see below), whose sum is σ = 86637432. Its totient is φ = 86450832.

The previous prime is 86544113. The next prime is 86544137. The reversal of 86544131 is 13144568.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86544131 is a prime.

It is a super-2 number, since 2×86544131² = 14979773221090322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86544137) 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, 45245 + ... + 47118.

It is an arithmetic number, because the mean of its divisors is an integer number (21659358).

Almost surely, 2^86544131 is an apocalyptic number.

86544131 is a deficient number, since it is larger than the sum of its proper divisors (93301).

86544131 is an equidigital number, since it uses as much as digits as its factorization.

86544131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93300.

The product of its digits is 11520, while the sum is 32.

The square root of 86544131 is about 9302.9098136013. The cubic root of 86544131 is about 442.3294687990.

Adding to 86544131 its reverse (13144568), we get a palindrome (99688699).

The spelling of 86544131 in words is "eighty-six million, five hundred forty-four thousand, one hundred thirty-one".