851275 has 12 divisors (see below), whose sum is σ = 1118232. Its totient is φ = 640640.

The previous prime is 851273. The next prime is 851293. The reversal of 851275 is 572158.

It is not a de Polignac number, because 851275 - 2¹ = 851273 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (93186).

2⁸⁵¹²⁷⁵ is an apocalyptic number.

851275 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

851275 is a deficient number, since it is larger than the sum of its proper divisors (266957).

851275 is a wasteful number, since it uses less digits than its factorization.

851275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2030 (or 2025 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 851275 is about 922.6456524582. The cubic root of 851275 is about 94.7741634685.

The spelling of 851275 in words is "eight hundred fifty-one thousand, two hundred seventy-five".