57155655 has 32 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 29869952.

The previous prime is 57155653. The next prime is 57155671. The reversal of 57155655 is 55655175.

It is a cyclic number.

It is not a de Polignac number, because 57155655 - 2¹ = 57155653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57155653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 239026 + ... + 239264.

It is an arithmetic number, because the mean of its divisors is an integer number (2916000).

Almost surely, 2^57155655 is an apocalyptic number.

57155655 is a deficient number, since it is larger than the sum of its proper divisors (36156345).

57155655 is a wasteful number, since it uses less digits than its factorization.

57155655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

The product of its digits is 131250, while the sum is 39.

The square root of 57155655 is about 7560.1359114767. The cubic root of 57155655 is about 385.2001096111.

The spelling of 57155655 in words is "fifty-seven million, one hundred fifty-five thousand, six hundred fifty-five".