55521205300 has 144 divisors (see below), whose sum is σ = 139581691200. Its totient is φ = 18956851200.

The previous prime is 55521205279. The next prime is 55521205339. The reversal of 55521205300 is 350212555.

55521205300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2349946 + ... + 2373454.

It is an arithmetic number, because the mean of its divisors is an integer number (969317300).

Almost surely, 2^55521205300 is an apocalyptic number.

55521205300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55521205300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69790845600).

55521205300 is an abundant number, since it is smaller than the sum of its proper divisors (84060485900).

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

55521205300 is a wasteful number, since it uses less digits than its factorization.

55521205300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23666 (or 23659 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

Adding to 55521205300 its reverse (350212555), we get a palindrome (55871417855).

The spelling of 55521205300 in words is "fifty-five billion, five hundred twenty-one million, two hundred five thousand, three hundred".