55330305 has 16 divisors (see below), whose sum is σ = 88850304. Its totient is φ = 29402240.

The previous prime is 55330271. The next prime is 55330309. The reversal of 55330305 is 50303355.

It is not a de Polignac number, because 55330305 - 2⁸ = 55330049 is a prime.

It is a super-2 number, since 2×55330305² = 6122885302786050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55330309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2349 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (5553144).

Almost surely, 2^55330305 is an apocalyptic number.

It is an amenable number.

55330305 is a deficient number, since it is larger than the sum of its proper divisors (33519999).

55330305 is a wasteful number, since it uses less digits than its factorization.

55330305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13416.

The product of its (nonzero) digits is 3375, while the sum is 24.

The square root of 55330305 is about 7438.4343110630. The cubic root of 55330305 is about 381.0550206085.

The spelling of 55330305 in words is "fifty-five million, three hundred thirty thousand, three hundred five".