55427227 has 2 divisors, whose sum is σ = 55427228. Its totient is φ = 55427226.

The previous prime is 55427219. The next prime is 55427231. The reversal of 55427227 is 72272455.

It is a happy number.

55427227 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 55427227 - 2³ = 55427219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55427192 and 55427201.

It is not a weakly prime, because it can be changed into another prime (55427257) 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, 27713613 + 27713614.

It is an arithmetic number, because the mean of its divisors is an integer number (27713614).

Almost surely, 2^55427227 is an apocalyptic number.

55427227 is a deficient number, since it is larger than the sum of its proper divisors (1).

55427227 is an equidigital number, since it uses as much as digits as its factorization.

55427227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39200, while the sum is 34.

The square root of 55427227 is about 7444.9464067917. The cubic root of 55427227 is about 381.2773886263.

It can be divided in two parts, 5542 and 7227, that added together give a square (12769 = 113²).

The spelling of 55427227 in words is "fifty-five million, four hundred twenty-seven thousand, two hundred twenty-seven".