51728177 has 2 divisors, whose sum is σ = 51728178. Its totient is φ = 51728176.

The previous prime is 51728167. The next prime is 51728207. The reversal of 51728177 is 77182715.

51728177 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 can be written as a sum of positive squares in only one way, i.e., 51208336 + 519841 = 7156^2 + 721^2 .

It is a cyclic number.

It is not a de Polignac number, because 51728177 - 2⁶ = 51728113 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51728177.

It is not a weakly prime, because it can be changed into another prime (51728137) 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, 25864088 + 25864089.

It is an arithmetic number, because the mean of its divisors is an integer number (25864089).

Almost surely, 2^51728177 is an apocalyptic number.

It is an amenable number.

51728177 is a deficient number, since it is larger than the sum of its proper divisors (1).

51728177 is an equidigital number, since it uses as much as digits as its factorization.

51728177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27440, while the sum is 38.

The square root of 51728177 is about 7192.2303216735. The cubic root of 51728177 is about 372.5996058122.

The spelling of 51728177 in words is "fifty-one million, seven hundred twenty-eight thousand, one hundred seventy-seven".