55200220 has 24 divisors (see below), whose sum is σ = 116099424. Its totient is φ = 22046016.

The previous prime is 55200209. The next prime is 55200239. The reversal of 55200220 is 2200255.

55200220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55200194 and 55200203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14209 + ... + 17671.

It is an arithmetic number, because the mean of its divisors is an integer number (4837476).

Almost surely, 2^55200220 is an apocalyptic number.

It is an amenable number.

55200220 is an abundant number, since it is smaller than the sum of its proper divisors (60899204).

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

55200220 is a wasteful number, since it uses less digits than its factorization.

55200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269 (or 4267 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 55200220 is about 7429.6850538902. The cubic root of 55200220 is about 380.7561582268.

Adding to 55200220 its reverse (2200255), we get a palindrome (57400475).

The spelling of 55200220 in words is "fifty-five million, two hundred thousand, two hundred twenty".