51352512523309 has 2 divisors, whose sum is σ = 51352512523310. Its totient is φ = 51352512523308.

The previous prime is 51352512523289. The next prime is 51352512523349. The reversal of 51352512523309 is 90332521525315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35858802721284 + 15493709802025 = 5988222^2 + 3936205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51352512523309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51352512523349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25676256261654 + 25676256261655.

It is an arithmetic number, because the mean of its divisors is an integer number (25676256261655).

Almost surely, 2^{51352512523309} is an apocalyptic number.

It is an amenable number.

51352512523309 is a deficient number, since it is larger than the sum of its proper divisors (1).

51352512523309 is an equidigital number, since it uses as much as digits as its factorization.

51352512523309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215000, while the sum is 46.

The spelling of 51352512523309 in words is "fifty-one trillion, three hundred fifty-two billion, five hundred twelve million, five hundred twenty-three thousand, three hundred nine".