55000110561 has 16 divisors (see below), whose sum is σ = 80037804288. Its totient is φ = 33317715600.

The previous prime is 55000110511. The next prime is 55000110587. The reversal of 55000110561 is 16501100055.

It is not a de Polignac number, because 55000110561 - 2³⁰ = 53926368737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55000110511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320731 + ... + 461376.

It is an arithmetic number, because the mean of its divisors is an integer number (5002362768).

Almost surely, 2^55000110561 is an apocalyptic number.

It is an amenable number.

55000110561 is a deficient number, since it is larger than the sum of its proper divisors (25037693727).

55000110561 is a wasteful number, since it uses less digits than its factorization.

55000110561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784252.

The product of its (nonzero) digits is 750, while the sum is 24.

It can be divided in two parts, 55000 and 110561, that added together give a palindrome (165561).

The spelling of 55000110561 in words is "fifty-five billion, one hundred ten thousand, five hundred sixty-one".