55389211 has 2 divisors, whose sum is σ = 55389212. Its totient is φ = 55389210.

The previous prime is 55389167. The next prime is 55389241. The reversal of 55389211 is 11298355.

55389211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55389211 - 2¹⁹ = 54864923 is a prime.

It is not a weakly prime, because it can be changed into another prime (55389241) 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, 27694605 + 27694606.

It is an arithmetic number, because the mean of its divisors is an integer number (27694606).

Almost surely, 2^55389211 is an apocalyptic number.

55389211 is a deficient number, since it is larger than the sum of its proper divisors (1).

55389211 is an equidigital number, since it uses as much as digits as its factorization.

55389211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 55389211 is about 7442.3928275790. The cubic root of 55389211 is about 381.1901994891.

The spelling of 55389211 in words is "fifty-five million, three hundred eighty-nine thousand, two hundred eleven".