55305237 has 16 divisors (see below), whose sum is σ = 80535168. Its totient is φ = 33552960.

The previous prime is 55305227. The next prime is 55305241. The reversal of 55305237 is 73250355.

55305237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55305237 - 2⁴ = 55305221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55305227) 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 15 ways as a sum of consecutive naturals, for example, 7218 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (5033448).

Almost surely, 2^55305237 is an apocalyptic number.

It is an amenable number.

55305237 is a deficient number, since it is larger than the sum of its proper divisors (25229931).

55305237 is a wasteful number, since it uses less digits than its factorization.

55305237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060.

The product of its (nonzero) digits is 15750, while the sum is 30.

The square root of 55305237 is about 7436.7490881433. The cubic root of 55305237 is about 380.9974648670.

The spelling of 55305237 in words is "fifty-five million, three hundred five thousand, two hundred thirty-seven".