55502777550 has 48 divisors (see below), whose sum is σ = 150160246272. Its totient is φ = 13455218400.

The previous prime is 55502777411. The next prime is 55502777579. The reversal of 55502777550 is 5577720555.

It is a self number, because there is not a number n which added to its sum of digits gives 55502777550.

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 23 ways as a sum of consecutive naturals, for example, 16817374 + ... + 16820673.

It is an arithmetic number, because the mean of its divisors is an integer number (3128338464).

Almost surely, 2^55502777550 is an apocalyptic number.

55502777550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55502777550 is an abundant number, since it is smaller than the sum of its proper divisors (94657468722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55502777550 is a wasteful number, since it uses less digits than its factorization.

55502777550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33638073 (or 33638068 counting only the distinct ones).

The product of its (nonzero) digits is 2143750, while the sum is 48.

The spelling of 55502777550 in words is "fifty-five billion, five hundred two million, seven hundred seventy-seven thousand, five hundred fifty".