55840311 has 6 divisors (see below), whose sum is σ = 80658240. Its totient is φ = 37226868.

The previous prime is 55840271. The next prime is 55840321. The reversal of 55840311 is 11304855.

55840311 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 55840311 - 2⁹ = 55839799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55840321) 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 5 ways as a sum of consecutive naturals, for example, 3102231 + ... + 3102248.

It is an arithmetic number, because the mean of its divisors is an integer number (13443040).

Almost surely, 2^55840311 is an apocalyptic number.

55840311 is a deficient number, since it is larger than the sum of its proper divisors (24817929).

55840311 is a wasteful number, since it uses less digits than its factorization.

55840311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6204485 (or 6204482 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 55840311 is about 7472.6374861892. The cubic root of 55840311 is about 382.2222307322. Note that the first 4 decimals are identical.

The spelling of 55840311 in words is "fifty-five million, eight hundred forty thousand, three hundred eleven".