813813055 has 32 divisors (see below), whose sum is σ = 1101247488. Its totient is φ = 572208000.

The previous prime is 813813053. The next prime is 813813061. The reversal of 813813055 is 550318318.

813813055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 813813055 - 2¹ = 813813053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 813813055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813813053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237162 + ... + 240568.

It is an arithmetic number, because the mean of its divisors is an integer number (34413984).

Almost surely, 2^813813055 is an apocalyptic number.

813813055 is a deficient number, since it is larger than the sum of its proper divisors (287434433).

813813055 is a wasteful number, since it uses less digits than its factorization.

813813055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 813813055 is about 28527.4088378177. The cubic root of 813813055 is about 933.6301845574.

The spelling of 813813055 in words is "eight hundred thirteen million, eight hundred thirteen thousand, fifty-five".