57655057 has 4 divisors (see below), whose sum is σ = 57863476. Its totient is φ = 57446640.

The previous prime is 57655033. The next prime is 57655093. The reversal of 57655057 is 75055675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35414401 + 22240656 = 5951^2 + 4716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57655057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57655757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103794 + ... + 104347.

It is an arithmetic number, because the mean of its divisors is an integer number (14465869).

Almost surely, 2^57655057 is an apocalyptic number.

It is an amenable number.

57655057 is a deficient number, since it is larger than the sum of its proper divisors (208419).

57655057 is a wasteful number, since it uses less digits than its factorization.

57655057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208418.

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 57655057 is about 7593.0927164101. The cubic root of 57655057 is about 386.3187631509.

The spelling of 57655057 in words is "fifty-seven million, six hundred fifty-five thousand, fifty-seven".