51779227 has 2 divisors, whose sum is σ = 51779228. Its totient is φ = 51779226.

The previous prime is 51779219. The next prime is 51779261. The reversal of 51779227 is 72297715.

It is a happy number.

51779227 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 51779227 - 2³ = 51779219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51779227.

It is not a weakly prime, because it can be changed into another prime (51770227) 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, 25889613 + 25889614.

It is an arithmetic number, because the mean of its divisors is an integer number (25889614).

Almost surely, 2^51779227 is an apocalyptic number.

51779227 is a deficient number, since it is larger than the sum of its proper divisors (1).

51779227 is an equidigital number, since it uses as much as digits as its factorization.

51779227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 40.

The square root of 51779227 is about 7195.7784151543. The cubic root of 51779227 is about 372.7221370716.

The spelling of 51779227 in words is "fifty-one million, seven hundred seventy-nine thousand, two hundred twenty-seven".