85285915 has 32 divisors (see below), whose sum is σ = 121528512. Its totient is φ = 56640000.

The previous prime is 85285913. The next prime is 85285939. The reversal of 85285915 is 51958258.

It is not a de Polignac number, because 85285915 - 2¹ = 85285913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85285913) 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, 71625 + ... + 72805.

It is an arithmetic number, because the mean of its divisors is an integer number (3797766).

Almost surely, 2^85285915 is an apocalyptic number.

85285915 is a deficient number, since it is larger than the sum of its proper divisors (36242597).

85285915 is a wasteful number, since it uses less digits than its factorization.

85285915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311.

The product of its digits is 144000, while the sum is 43.

The square root of 85285915 is about 9235.0373578021. The cubic root of 85285915 is about 440.1754035519.

The spelling of 85285915 in words is "eighty-five million, two hundred eighty-five thousand, nine hundred fifteen".