851055 has 8 divisors (see below), whose sum is σ = 1361712. Its totient is φ = 453888.

The previous prime is 851051. The next prime is 851057. The reversal of 851055 is 550158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 851055 - 2² = 851051 is a prime.

It is a super-2 number, since 2×851055² = 1448589226050, which contains 22 as substring.

851055 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28354 + ... + 28383.

It is an arithmetic number, because the mean of its divisors is an integer number (170214).

2⁸⁵¹⁰⁵⁵ is an apocalyptic number.

851055 is a deficient number, since it is larger than the sum of its proper divisors (510657).

851055 is a wasteful number, since it uses less digits than its factorization.

851055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56745.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 851055 is about 922.5264223858. The cubic root of 851055 is about 94.7659984171.

The spelling of 851055 in words is "eight hundred fifty-one thousand, fifty-five".