55556550550 has 48 divisors (see below), whose sum is σ = 105149988720. Its totient is φ = 21832796160.

The previous prime is 55556550527. The next prime is 55556550587. The reversal of 55556550550 is 5505565555.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55556550550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5945482 + ... + 5954818.

It is an arithmetic number, because the mean of its divisors is an integer number (2190624765).

Almost surely, 2^55556550550 is an apocalyptic number.

55556550550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55556550550 is a deficient number, since it is larger than the sum of its proper divisors (49593438170).

55556550550 is a wasteful number, since it uses less digits than its factorization.

55556550550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11425 (or 11420 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 46.

It can be divided in two parts, 555565505 and 50, that added together give a palindrome (555565555).

The spelling of 55556550550 in words is "fifty-five billion, five hundred fifty-six million, five hundred fifty thousand, five hundred fifty".