55505050550 has 48 divisors (see below), whose sum is σ = 108755427600. Its totient is φ = 21017548800.

The previous prime is 55505050543. The next prime is 55505050553. The reversal of 55505050550 is 5505050555.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55505050550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505050553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1271486 + ... + 1314414.

It is an arithmetic number, because the mean of its divisors is an integer number (2265738075).

Almost surely, 2^55505050550 is an apocalyptic number.

55505050550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55505050550 is a deficient number, since it is larger than the sum of its proper divisors (53250377050).

55505050550 is a wasteful number, since it uses less digits than its factorization.

55505050550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44321 (or 44316 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 35.

It can be divided in two parts, 555050505 and 50, that added together give a palindrome (555050555).

The spelling of 55505050550 in words is "fifty-five billion, five hundred five million, fifty thousand, five hundred fifty".