57428055 has 16 divisors (see below), whose sum is σ = 102094560. Its totient is φ = 30628224.

The previous prime is 57428039. The next prime is 57428083. The reversal of 57428055 is 55082475.

It is a happy number.

57428055 is a `hidden beast` number, since 574 + 2 + 80 + 5 + 5 = 666.

57428055 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 57428055 - 2⁴ = 57428039 is a prime.

It is a zygodrome in base 3.

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 15 ways as a sum of consecutive naturals, for example, 212562 + ... + 212831.

It is an arithmetic number, because the mean of its divisors is an integer number (6380910).

Almost surely, 2^57428055 is an apocalyptic number.

57428055 is a deficient number, since it is larger than the sum of its proper divisors (44666505).

57428055 is a wasteful number, since it uses less digits than its factorization.

57428055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425407 (or 425401 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 57428055 is about 7578.1300463901. The cubic root of 57428055 is about 385.8110859339.

The spelling of 57428055 in words is "fifty-seven million, four hundred twenty-eight thousand, fifty-five".