855041181 has 4 divisors (see below), whose sum is σ = 1140054912. Its totient is φ = 570027452.

The previous prime is 855041179. The next prime is 855041207. The reversal of 855041181 is 181140558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855041181 - 2¹ = 855041179 is a prime.

It is a super-2 number, since 2×855041181² = 1462190842411749522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855041171) 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, 142506861 + ... + 142506866.

It is an arithmetic number, because the mean of its divisors is an integer number (285013728).

Almost surely, 2^855041181 is an apocalyptic number.

It is an amenable number.

855041181 is a deficient number, since it is larger than the sum of its proper divisors (285013731).

855041181 is a wasteful number, since it uses less digits than its factorization.

855041181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285013730.

The product of its (nonzero) digits is 6400, while the sum is 33.

The square root of 855041181 is about 29241.0872061899. The cubic root of 855041181 is about 949.1372336842.

The spelling of 855041181 in words is "eight hundred fifty-five million, forty-one thousand, one hundred eighty-one".