55055550550550 has 48 divisors (see below), whose sum is σ = 111714673522032. Its totient is φ = 20019849590400.

The previous prime is 55055550550523. The next prime is 55055550550607. The reversal of 55055550550550 is 5505505555055.

It is a super-2 number, since 2×55055550550550² (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).

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, 31654172 + ... + 33348128.

It is an arithmetic number, because the mean of its divisors is an integer number (2327389031709).

Almost surely, 2^{55055550550550} is an apocalyptic number.

55055550550550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55055550550550 is an abundant number, since it is smaller than the sum of its proper divisors (56659122971482).

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

55055550550550 is a wasteful number, since it uses less digits than its factorization.

55055550550550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753073 (or 1753068 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, 550555505 and 50550, that added together give a palindrome (550606055).

The spelling of 55055550550550 in words is "fifty-five trillion, fifty-five billion, five hundred fifty million, five hundred fifty thousand, five hundred fifty".