55555050505550 has 12 divisors (see below), whose sum is σ = 103332393940416. Its totient is φ = 22222020202200.

The previous prime is 55555050505499. The next prime is 55555050505553. The reversal of 55555050505550 is 5550505055555.

It is a super-2 number, since 2×55555050505550² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 1111101010111 = 55555050505550 / (5 + 5 + 5 + 5 + 5 + 0 + 5 + 0 + 5 + 0 + 5 + 5 + 5 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555050505553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555550505006 + ... + 555550505105.

It is an arithmetic number, because the mean of its divisors is an integer number (8611032828368).

Almost surely, 2^{55555050505550} is an apocalyptic number.

55555050505550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55555050505550 is a deficient number, since it is larger than the sum of its proper divisors (47777343434866).

55555050505550 is a wasteful number, since it uses less digits than its factorization.

55555050505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111101010123 (or 1111101010118 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

It can be divided in two parts, 5 and 5555050505550, that added together give a palindrome (5555050505555).

The spelling of 55555050505550 in words is "fifty-five trillion, five hundred fifty-five billion, fifty million, five hundred five thousand, five hundred fifty".