855811023 has 8 divisors (see below), whose sum is σ = 1141795248. Its totient is φ = 570183744.

The previous prime is 855811007. The next prime is 855811031. The reversal of 855811023 is 320118558.

It is a happy number.

855811023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 855811023 - 2⁴ = 855811007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855811223) 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, 83590 + ... + 93267.

It is an arithmetic number, because the mean of its divisors is an integer number (142724406).

Almost surely, 2^855811023 is an apocalyptic number.

855811023 is a deficient number, since it is larger than the sum of its proper divisors (285984225).

855811023 is a wasteful number, since it uses less digits than its factorization.

855811023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178473.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 855811023 is about 29254.2479479477. The cubic root of 855811023 is about 949.4220022386.

The spelling of 855811023 in words is "eight hundred fifty-five million, eight hundred eleven thousand, twenty-three".