57020055 has 32 divisors (see below), whose sum is σ = 93797568. Its totient is φ = 29568000.

The previous prime is 57020039. The next prime is 57020099. The reversal of 57020055 is 55002075.

It is not a de Polignac number, because 57020055 - 2⁴ = 57020039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92107 + ... + 92723.

It is an arithmetic number, because the mean of its divisors is an integer number (2931174).

Almost surely, 2^57020055 is an apocalyptic number.

57020055 is a deficient number, since it is larger than the sum of its proper divisors (36777513).

57020055 is a wasteful number, since it uses less digits than its factorization.

57020055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787.

The product of its (nonzero) digits is 1750, while the sum is 24.

The square root of 57020055 is about 7551.1624932854. The cubic root of 57020055 is about 384.8952433265.

The spelling of 57020055 in words is "fifty-seven million, twenty thousand, fifty-five".