55550505500 has 48 divisors (see below), whose sum is σ = 138654070464. Its totient is φ = 19045886400.

The previous prime is 55550505499. The next prime is 55550505509. The reversal of 55550505500 is 550505555.

55550505500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55550505500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55550505509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7932287 + ... + 7939286.

It is an arithmetic number, because the mean of its divisors is an integer number (2888626468).

Almost surely, 2^55550505500 is an apocalyptic number.

55550505500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55550505500 is an abundant number, since it is smaller than the sum of its proper divisors (83103564964).

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

55550505500 is a wasteful number, since it uses less digits than its factorization.

55550505500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15871599 (or 15871587 counting only the distinct ones).

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

Subtracting from 55550505500 its reverse (550505555), we obtain a palindrome (54999999945).

The spelling of 55550505500 in words is "fifty-five billion, five hundred fifty million, five hundred five thousand, five hundred".