856151 has 4 divisors (see below), whose sum is σ = 858312. Its totient is φ = 853992.

The previous prime is 856147. The next prime is 856153. The reversal of 856151 is 151658.

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 856151 - 2² = 856147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856151.

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, 296 + ... + 1341.

It is an arithmetic number, because the mean of its divisors is an integer number (214578).

2⁸⁵⁶¹⁵¹ is an apocalyptic number.

856151 is a deficient number, since it is larger than the sum of its proper divisors (2161).

856151 is a wasteful number, since it uses less digits than its factorization.

856151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160.

The product of its digits is 1200, while the sum is 26.

The square root of 856151 is about 925.2842806403. The cubic root of 856151 is about 94.9547707136.

The spelling of 856151 in words is "eight hundred fifty-six thousand, one hundred fifty-one".