85258518 has 16 divisors (see below), whose sum is σ = 170858160. Its totient is φ = 28362656.

The previous prime is 85258501. The next prime is 85258531. The reversal of 85258518 is 81585258.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85258518.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10905 + ... + 17012.

It is an arithmetic number, because the mean of its divisors is an integer number (10678635).

Almost surely, 2^85258518 is an apocalyptic number.

85258518 is an abundant number, since it is smaller than the sum of its proper divisors (85599642).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85258518 is a wasteful number, since it uses less digits than its factorization.

85258518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431.

The product of its digits is 128000, while the sum is 42.

The square root of 85258518 is about 9233.5539203494. The cubic root of 85258518 is about 440.1282649473.

The spelling of 85258518 in words is "eighty-five million, two hundred fifty-eight thousand, five hundred eighteen".