51002535317 has 2 divisors, whose sum is σ = 51002535318. Its totient is φ = 51002535316.

The previous prime is 51002535281. The next prime is 51002535379. The reversal of 51002535317 is 71353520015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50935524721 + 67010596 = 225689^2 + 8186^2 .

It is a cyclic number.

It is not a de Polignac number, because 51002535317 - 2¹² = 51002531221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51002535817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25501267658 + 25501267659.

It is an arithmetic number, because the mean of its divisors is an integer number (25501267659).

Almost surely, 2^51002535317 is an apocalyptic number.

It is an amenable number.

51002535317 is a deficient number, since it is larger than the sum of its proper divisors (1).

51002535317 is an equidigital number, since it uses as much as digits as its factorization.

51002535317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15750, while the sum is 32.

The spelling of 51002535317 in words is "fifty-one billion, two million, five hundred thirty-five thousand, three hundred seventeen".