856875159 has 32 divisors (see below), whose sum is σ = 1469184000. Its totient is φ = 483436512.

The previous prime is 856875133. The next prime is 856875197. The reversal of 856875159 is 951578658.

856875159 is a `hidden beast` number, since 8 + 568 + 75 + 1 + 5 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-856875159 is a prime.

It is a super-2 number, since 2×856875159² = 1468470076222550562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856875109) 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, 13764 + ... + 43625.

It is an arithmetic number, because the mean of its divisors is an integer number (45912000).

Almost surely, 2^856875159 is an apocalyptic number.

856875159 is a deficient number, since it is larger than the sum of its proper divisors (612308841).

856875159 is a wasteful number, since it uses less digits than its factorization.

856875159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57484 (or 57478 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 54.

The square root of 856875159 is about 29272.4300152891. The cubic root of 856875159 is about 949.8153506314.

The spelling of 856875159 in words is "eight hundred fifty-six million, eight hundred seventy-five thousand, one hundred fifty-nine".