57655655 has 4 divisors (see below), whose sum is σ = 69186792. Its totient is φ = 46124520.

The previous prime is 57655639. The next prime is 57655667. The reversal of 57655655 is 55655675.

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

It is not a de Polignac number, because 57655655 - 2⁴ = 57655639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5765561 + ... + 5765570.

It is an arithmetic number, because the mean of its divisors is an integer number (17296698).

Almost surely, 2^57655655 is an apocalyptic number.

57655655 is a deficient number, since it is larger than the sum of its proper divisors (11531137).

57655655 is a wasteful number, since it uses less digits than its factorization.

57655655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11531136.

The product of its digits is 787500, while the sum is 44.

The square root of 57655655 is about 7593.1320942020. The cubic root of 57655655 is about 386.3200987829.

It can be divided in two parts, 57 and 655655, that multiplied together give a triangular number (37372335 = T₈₆₄₅).

The spelling of 57655655 in words is "fifty-seven million, six hundred fifty-five thousand, six hundred fifty-five".