857057 has 4 divisors (see below), whose sum is σ = 884736. Its totient is φ = 829380.

The previous prime is 857053. The next prime is 857069. The reversal of 857057 is 750758.

857057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 857057 - 2² = 857053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13793 + ... + 13854.

It is an arithmetic number, because the mean of its divisors is an integer number (221184).

2⁸⁵⁷⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

857057 is a deficient number, since it is larger than the sum of its proper divisors (27679).

857057 is a wasteful number, since it uses less digits than its factorization.

857057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27678.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 857057 is about 925.7737304547. The cubic root of 857057 is about 94.9882533953.

The spelling of 857057 in words is "eight hundred fifty-seven thousand, fifty-seven".