55911307 has 2 divisors, whose sum is σ = 55911308. Its totient is φ = 55911306.

The previous prime is 55911301. The next prime is 55911337. The reversal of 55911307 is 70311955.

55911307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55911307 - 2⁷ = 55911179 is a prime.

It is not a weakly prime, because it can be changed into another prime (55911301) 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 as a sum of consecutive naturals, namely, 27955653 + 27955654.

It is an arithmetic number, because the mean of its divisors is an integer number (27955654).

Almost surely, 2^55911307 is an apocalyptic number.

55911307 is a deficient number, since it is larger than the sum of its proper divisors (1).

55911307 is an equidigital number, since it uses as much as digits as its factorization.

55911307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 55911307 is about 7477.3863749307. The cubic root of 55911307 is about 382.3841493455.

The spelling of 55911307 in words is "fifty-five million, nine hundred eleven thousand, three hundred seven".