55320005 has 16 divisors (see below), whose sum is σ = 72503424. Its totient is φ = 40272960.

The previous prime is 55319983. The next prime is 55320011. The reversal of 55320005 is 50002355.

55320005 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 55320005 - 2¹⁸ = 55057861 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1379 + ... + 10608.

It is an arithmetic number, because the mean of its divisors is an integer number (4531464).

Almost surely, 2^55320005 is an apocalyptic number.

It is an amenable number.

55320005 is a deficient number, since it is larger than the sum of its proper divisors (17183419).

55320005 is a wasteful number, since it uses less digits than its factorization.

55320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12076.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 55320005 is about 7437.7419288383. The cubic root of 55320005 is about 381.0313740717.

The spelling of 55320005 in words is "fifty-five million, three hundred twenty thousand, five".