51013055239 has 2 divisors, whose sum is σ = 51013055240. Its totient is φ = 51013055238.

The previous prime is 51013055221. The next prime is 51013055279. The reversal of 51013055239 is 93255031015.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51013055239 - 2⁷ = 51013055111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51013055279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25506527619 + 25506527620.

It is an arithmetic number, because the mean of its divisors is an integer number (25506527620).

Almost surely, 2^51013055239 is an apocalyptic number.

51013055239 is a deficient number, since it is larger than the sum of its proper divisors (1).

51013055239 is an equidigital number, since it uses as much as digits as its factorization.

51013055239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 34.

The spelling of 51013055239 in words is "fifty-one billion, thirteen million, fifty-five thousand, two hundred thirty-nine".