55055555055 has 24 divisors (see below), whose sum is σ = 99578744928. Its totient is φ = 28086311616.

The previous prime is 55055555053. The next prime is 55055555081.

55055555055 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55055555055 - 2¹ = 55055555053 is a prime.

It is a super-2 number, since 2×55055555055² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55055555055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055555053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26595852 + ... + 26597921.

It is an arithmetic number, because the mean of its divisors is an integer number (4149114372).

Almost surely, 2^55055555055 is an apocalyptic number.

55055555055 is a deficient number, since it is larger than the sum of its proper divisors (44523189873).

55055555055 is a wasteful number, since it uses less digits than its factorization.

55055555055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53193807 (or 53193804 counting only the distinct ones).

The product of its (nonzero) digits is 1953125, while the sum is 45.

The spelling of 55055555055 in words is "fifty-five billion, fifty-five million, five hundred fifty-five thousand, fifty-five".