85423524 has 12 divisors (see below), whose sum is σ = 199321584. Its totient is φ = 28474504.

The previous prime is 85423523. The next prime is 85423549. The reversal of 85423524 is 42532458.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (85423523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3559302 + ... + 3559325.

It is an arithmetic number, because the mean of its divisors is an integer number (16610132).

Almost surely, 2^85423524 is an apocalyptic number.

It is an amenable number.

85423524 is an abundant number, since it is smaller than the sum of its proper divisors (113898060).

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

85423524 is a wasteful number, since it uses less digits than its factorization.

85423524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118634 (or 7118632 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 85423524 is about 9242.4847308502. The cubic root of 85423524 is about 440.4120176460.

The spelling of 85423524 in words is "eighty-five million, four hundred twenty-three thousand, five hundred twenty-four".