55550305 has 16 divisors (see below), whose sum is σ = 70917120. Its totient is φ = 41627392.

The previous prime is 55550291. The next prime is 55550309. The reversal of 55550305 is 50305555.

55550305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55550305 - 2⁵ = 55550273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55550309) 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, 17856 + ... + 20734.

It is an arithmetic number, because the mean of its divisors is an integer number (4432320).

Almost surely, 2^55550305 is an apocalyptic number.

It is an amenable number.

55550305 is a deficient number, since it is larger than the sum of its proper divisors (15366815).

55550305 is a wasteful number, since it uses less digits than its factorization.

55550305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128.

The product of its (nonzero) digits is 9375, while the sum is 28.

The square root of 55550305 is about 7453.2076987026. The cubic root of 55550305 is about 381.5593930343.

It can be divided in two parts, 55550 and 305, that added together give a palindrome (55855).

The spelling of 55550305 in words is "fifty-five million, five hundred fifty thousand, three hundred five".