55112310891 has 12 divisors (see below), whose sum is σ = 86843641560. Its totient is φ = 33401400480.

The previous prime is 55112310887. The next prime is 55112310893. The reversal of 55112310891 is 19801321155.

55112310891 is a `hidden beast` number, since 551 + 1 + 2 + 3 + 10 + 8 + 91 = 666.

55112310891 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 55112310891 - 2² = 55112310887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55112310893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278344906 + ... + 278345103.

It is an arithmetic number, because the mean of its divisors is an integer number (7236970130).

Almost surely, 2^55112310891 is an apocalyptic number.

55112310891 is a deficient number, since it is larger than the sum of its proper divisors (31731330669).

55112310891 is a wasteful number, since it uses less digits than its factorization.

55112310891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556690026 (or 556690023 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 36.

The spelling of 55112310891 in words is "fifty-five billion, one hundred twelve million, three hundred ten thousand, eight hundred ninety-one".