51728843 has 2 divisors, whose sum is σ = 51728844. Its totient is φ = 51728842.

The previous prime is 51728827. The next prime is 51728861. The reversal of 51728843 is 34882715.

51728843 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 51728843 - 2⁴ = 51728827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51728797 and 51728806.

It is not a weakly prime, because it can be changed into another prime (51728813) 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, 25864421 + 25864422.

It is an arithmetic number, because the mean of its divisors is an integer number (25864422).

Almost surely, 2^51728843 is an apocalyptic number.

51728843 is a deficient number, since it is larger than the sum of its proper divisors (1).

51728843 is an equidigital number, since it uses as much as digits as its factorization.

51728843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 38.

The square root of 51728843 is about 7192.2766214878. The cubic root of 51728843 is about 372.6012048780.

The spelling of 51728843 in words is "fifty-one million, seven hundred twenty-eight thousand, eight hundred forty-three".