851167 has 4 divisors (see below), whose sum is σ = 878656. Its totient is φ = 823680.

The previous prime is 851159. The next prime is 851171. The reversal of 851167 is 761158.

It is a happy number.

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 851167 - 2³ = 851159 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 (851117) 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, 13698 + ... + 13759.

It is an arithmetic number, because the mean of its divisors is an integer number (219664).

2⁸⁵¹¹⁶⁷ is an apocalyptic number.

851167 is a deficient number, since it is larger than the sum of its proper divisors (27489).

851167 is a wasteful number, since it uses less digits than its factorization.

851167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27488.

The product of its digits is 1680, while the sum is 28.

The square root of 851167 is about 922.5871232572. The cubic root of 851167 is about 94.7701553463.

Subtracting from 851167 its reverse (761158), we obtain a palindrome (90009).

The spelling of 851167 in words is "eight hundred fifty-one thousand, one hundred sixty-seven".