851156 has 12 divisors (see below), whose sum is σ = 1577268. Its totient is φ = 400512.

The previous prime is 851153. The next prime is 851159. The reversal of 851156 is 651158.

851156 = T₁₂₃ + T₁₂₄ + ... + T₁₉₀.

It is an interprime number because it is at equal distance from previous prime (851153) and next prime (851159).

It can be written as a sum of positive squares in 2 ways, for example, as 739600 + 111556 = 860^2 + 334^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851153) 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, 6191 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (131439).

2⁸⁵¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

851156 is a deficient number, since it is larger than the sum of its proper divisors (726112).

851156 is a wasteful number, since it uses less digits than its factorization.

851156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538 (or 12536 counting only the distinct ones).

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

The square root of 851156 is about 922.5811617413. The cubic root of 851156 is about 94.7697470926.

The spelling of 851156 in words is "eight hundred fifty-one thousand, one hundred fifty-six".