856271 has 4 divisors (see below), whose sum is σ = 922152. Its totient is φ = 790392.

The previous prime is 856249. The next prime is 856277. The reversal of 856271 is 172658.

856271 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.

It is a cyclic number.

It is not a de Polignac number, because 856271 - 2¹⁴ = 839887 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 (856277) 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, 32921 + ... + 32946.

It is an arithmetic number, because the mean of its divisors is an integer number (230538).

2⁸⁵⁶²⁷¹ is an apocalyptic number.

856271 is a deficient number, since it is larger than the sum of its proper divisors (65881).

856271 is a wasteful number, since it uses less digits than its factorization.

856271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65880.

The product of its digits is 3360, while the sum is 29.

The square root of 856271 is about 925.3491233043. The cubic root of 856271 is about 94.9592068626.

The spelling of 856271 in words is "eight hundred fifty-six thousand, two hundred seventy-one".