855811110 has 512 divisors, whose sum is σ = 3025797120. Its totient is φ = 149299200.

The previous prime is 855811057. The next prime is 855811133. The reversal of 855811110 is 11118558.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 23130012 + ... + 23130048.

It is an arithmetic number, because the mean of its divisors is an integer number (5909760).

Almost surely, 2^855811110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855811110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1512898560).

855811110 is an abundant number, since it is smaller than the sum of its proper divisors (2169986010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855811110 is a wasteful number, since it uses less digits than its factorization.

855811110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132.

The product of its (nonzero) digits is 1600, while the sum is 30.

The square root of 855811110 is about 29254.2494349112. The cubic root of 855811110 is about 949.4220344107.

Adding to 855811110 its reverse (11118558), we get a palindrome (866929668).

The spelling of 855811110 in words is "eight hundred fifty-five million, eight hundred eleven thousand, one hundred ten".