55021711 has 2 divisors, whose sum is σ = 55021712. Its totient is φ = 55021710.

The previous prime is 55021693. The next prime is 55021717. The reversal of 55021711 is 11712055.

55021711 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 55021711 - 2⁵ = 55021679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55021717) 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, 27510855 + 27510856.

It is an arithmetic number, because the mean of its divisors is an integer number (27510856).

Almost surely, 2^55021711 is an apocalyptic number.

55021711 is a deficient number, since it is larger than the sum of its proper divisors (1).

55021711 is an equidigital number, since it uses as much as digits as its factorization.

55021711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 55021711 is about 7417.6620979929. The cubic root of 55021711 is about 380.3452794332.

Adding to 55021711 its reverse (11712055), we get a palindrome (66733766).

The spelling of 55021711 in words is "fifty-five million, twenty-one thousand, seven hundred eleven".