85044531 has 32 divisors (see below), whose sum is σ = 134281728. Its totient is φ = 47197440.

The previous prime is 85044517. The next prime is 85044571. The reversal of 85044531 is 13544058.

It is not a de Polignac number, because 85044531 - 2⁵ = 85044499 is a prime.

It is a super-2 number, since 2×85044531² = 14465144506019922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85044571) 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 31 ways as a sum of consecutive naturals, for example, 58050 + ... + 59496.

It is an arithmetic number, because the mean of its divisors is an integer number (4196304).

Almost surely, 2^85044531 is an apocalyptic number.

85044531 is a deficient number, since it is larger than the sum of its proper divisors (49237197).

85044531 is a wasteful number, since it uses less digits than its factorization.

85044531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 85044531 is about 9221.9591736247. The cubic root of 85044531 is about 439.7597362511.

Adding to 85044531 its reverse (13544058), we get a palindrome (98588589).

The spelling of 85044531 in words is "eighty-five million, forty-four thousand, five hundred thirty-one".