55085911 has 2 divisors, whose sum is σ = 55085912. Its totient is φ = 55085910.

The previous prime is 55085909. The next prime is 55085917. The reversal of 55085911 is 11958055.

55085911 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 55085911 - 2¹ = 55085909 is a prime.

Together with 55085909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55085917) 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, 27542955 + 27542956.

It is an arithmetic number, because the mean of its divisors is an integer number (27542956).

Almost surely, 2^55085911 is an apocalyptic number.

55085911 is a deficient number, since it is larger than the sum of its proper divisors (1).

55085911 is an equidigital number, since it uses as much as digits as its factorization.

55085911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 34.

The square root of 55085911 is about 7421.9883454503. The cubic root of 55085911 is about 380.4931524304.

The spelling of 55085911 in words is "fifty-five million, eighty-five thousand, nine hundred eleven".