85811052 has 24 divisors (see below), whose sum is σ = 200793600. Its totient is φ = 28522576.

The previous prime is 85811039. The next prime is 85811083. The reversal of 85811052 is 25011858.

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, 5652 + ... + 14267.

It is an arithmetic number, because the mean of its divisors is an integer number (8366400).

Almost surely, 2^85811052 is an apocalyptic number.

It is an amenable number.

85811052 is an abundant number, since it is smaller than the sum of its proper divisors (114982548).

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

85811052 is a wasteful number, since it uses less digits than its factorization.

85811052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20285 (or 20283 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 85811052 is about 9263.4255003211. The cubic root of 85811052 is about 441.0769966495.

The spelling of 85811052 in words is "eighty-five million, eight hundred eleven thousand, fifty-two".