57000055 has 16 divisors (see below), whose sum is σ = 78315840. Its totient is φ = 39013632.

The previous prime is 57000037. The next prime is 57000059. The reversal of 57000055 is 55000075.

It is not a de Polignac number, because 57000055 - 2¹⁷ = 56868983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57000059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23667 + ... + 25963.

It is an arithmetic number, because the mean of its divisors is an integer number (4894740).

Almost surely, 2^57000055 is an apocalyptic number.

57000055 is a deficient number, since it is larger than the sum of its proper divisors (21315785).

57000055 is a wasteful number, since it uses less digits than its factorization.

57000055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3018.

The product of its (nonzero) digits is 875, while the sum is 22.

The square root of 57000055 is about 7549.8380777339. The cubic root of 57000055 is about 384.8502369098.

The spelling of 57000055 in words is "fifty-seven million, fifty-five", and thus it is an aban number and an uban number.