57056757 has 4 divisors (see below), whose sum is σ = 76075680. Its totient is φ = 38037836.

The previous prime is 57056729. The next prime is 57056759. The reversal of 57056757 is 75765075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57056757 - 2⁶ = 57056693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57056759) 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, 9509457 + ... + 9509462.

It is an arithmetic number, because the mean of its divisors is an integer number (19018920).

Almost surely, 2^57056757 is an apocalyptic number.

It is an amenable number.

57056757 is a deficient number, since it is larger than the sum of its proper divisors (19018923).

57056757 is a wasteful number, since it uses less digits than its factorization.

57056757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19018922.

The product of its (nonzero) digits is 257250, while the sum is 42.

The square root of 57056757 is about 7553.5923241859. The cubic root of 57056757 is about 384.9778072326.

The spelling of 57056757 in words is "fifty-seven million, fifty-six thousand, seven hundred fifty-seven".