57020845 has 32 divisors (see below), whose sum is σ = 81181440. Its totient is φ = 37639680.

The previous prime is 57020837. The next prime is 57020861. The reversal of 57020845 is 54802075.

57020845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57020845 - 2³ = 57020837 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 109185 + ... + 109705.

It is an arithmetic number, because the mean of its divisors is an integer number (2536920).

Almost surely, 2^57020845 is an apocalyptic number.

It is an amenable number.

57020845 is a deficient number, since it is larger than the sum of its proper divisors (24160595).

57020845 is a wasteful number, since it uses less digits than its factorization.

57020845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 57020845 is about 7551.2148029307. The cubic root of 57020845 is about 384.8970208639.

The spelling of 57020845 in words is "fifty-seven million, twenty thousand, eight hundred forty-five".