856157 has 4 divisors (see below), whose sum is σ = 861120. Its totient is φ = 851196.

The previous prime is 856153. The next prime is 856169. The reversal of 856157 is 751658.

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 856157 - 2² = 856153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856153) 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, 2213 + ... + 2570.

It is an arithmetic number, because the mean of its divisors is an integer number (215280).

2⁸⁵⁶¹⁵⁷ is an apocalyptic number.

It is an amenable number.

856157 is a deficient number, since it is larger than the sum of its proper divisors (4963).

856157 is a wasteful number, since it uses less digits than its factorization.

856157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962.

The product of its digits is 8400, while the sum is 32.

The square root of 856157 is about 925.2875228814. The cubic root of 856157 is about 94.9549925309.

It can be divided in two parts, 8 and 56157, that added together give a palindrome (56165).

The spelling of 856157 in words is "eight hundred fifty-six thousand, one hundred fifty-seven".