55305238 has 16 divisors (see below), whose sum is σ = 88524720. Its totient is φ = 25837056.

The previous prime is 55305227. The next prime is 55305241. The reversal of 55305238 is 83250355.

55305238 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 7 ways as a sum of consecutive naturals, for example, 7195 + ... + 12742.

It is an arithmetic number, because the mean of its divisors is an integer number (5532795).

Almost surely, 2^55305238 is an apocalyptic number.

55305238 is a deficient number, since it is larger than the sum of its proper divisors (33219482).

55305238 is a wasteful number, since it uses less digits than its factorization.

55305238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 55305238 is about 7436.7491553770. The cubic root of 55305238 is about 380.9974671633.

The spelling of 55305238 in words is "fifty-five million, three hundred five thousand, two hundred thirty-eight".