85812057 has 24 divisors (see below), whose sum is σ = 132507648. Its totient is φ = 53380800.

The previous prime is 85812029. The next prime is 85812071. The reversal of 85812057 is 75021858.

85812057 is a `hidden beast` number, since 8 + 581 + 20 + 57 = 666.

It is not a de Polignac number, because 85812057 - 2⁶ = 85811993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85819057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3432 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (5521152).

Almost surely, 2^85812057 is an apocalyptic number.

It is an amenable number.

85812057 is a deficient number, since it is larger than the sum of its proper divisors (46695591).

85812057 is a wasteful number, since it uses less digits than its factorization.

85812057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181 (or 10178 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 85812057 is about 9263.4797457543. The cubic root of 85812057 is about 441.0787185747.

The spelling of 85812057 in words is "eighty-five million, eight hundred twelve thousand, fifty-seven".