55203420 has 48 divisors (see below), whose sum is σ = 163664928. Its totient is φ = 13854720.

The previous prime is 55203413. The next prime is 55203439. The reversal of 55203420 is 2430255.

55203420 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26041 + ... + 28080.

It is an arithmetic number, because the mean of its divisors is an integer number (3409686).

Almost surely, 2^55203420 is an apocalyptic number.

It is an amenable number.

55203420 is an abundant number, since it is smaller than the sum of its proper divisors (108461508).

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

55203420 is a wasteful number, since it uses less digits than its factorization.

55203420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54150 (or 54148 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 55203420 is about 7429.9004031010. The cubic root of 55203420 is about 380.7635156622.

Adding to 55203420 its reverse (2430255), we get a palindrome (57633675).

The spelling of 55203420 in words is "fifty-five million, two hundred three thousand, four hundred twenty".