55413220 has 24 divisors (see below), whose sum is σ = 116524800. Its totient is φ = 22135392.

The previous prime is 55413199. The next prime is 55413223. The reversal of 55413220 is 2231455.

55413220 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 = 55413191 and 55413200.

It is not an unprimeable number, because it can be changed into a prime (55413223) by changing a digit.

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, 19021 + ... + 21739.

It is an arithmetic number, because the mean of its divisors is an integer number (4855200).

Almost surely, 2^55413220 is an apocalyptic number.

It is an amenable number.

55413220 is an abundant number, since it is smaller than the sum of its proper divisors (61111580).

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

55413220 is a wasteful number, since it uses less digits than its factorization.

55413220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 55413220 is about 7444.0056421258. The cubic root of 55413220 is about 381.2452684175.

Adding to 55413220 its reverse (2231455), we get a palindrome (57644675).

The spelling of 55413220 in words is "fifty-five million, four hundred thirteen thousand, two hundred twenty".