55005561055 has 12 divisors (see below), whose sum is σ = 67144413672. Its totient is φ = 43258597040.

The previous prime is 55005561043. The next prime is 55005561137. The reversal of 55005561055 is 55016550055.

It is not a de Polignac number, because 55005561055 - 2¹⁹ = 55005036767 is a prime.

It is a super-2 number, since 2×55005561055² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1562761 + ... + 1597570.

It is an arithmetic number, because the mean of its divisors is an integer number (5595367806).

Almost surely, 2^55005561055 is an apocalyptic number.

55005561055 is a deficient number, since it is larger than the sum of its proper divisors (12138852617).

55005561055 is an equidigital number, since it uses as much as digits as its factorization.

55005561055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160454 (or 3160395 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 37.

The spelling of 55005561055 in words is "fifty-five billion, five million, five hundred sixty-one thousand, fifty-five".