51051601551317 has 2 divisors, whose sum is σ = 51051601551318. Its totient is φ = 51051601551316.

The previous prime is 51051601551259. The next prime is 51051601551323. The reversal of 51051601551317 is 71315510615015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41617452443281 + 9434149108036 = 6451159^2 + 3071506^2 .

It is a cyclic number.

It is not a de Polignac number, because 51051601551317 - 2⁶ = 51051601551253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51051601551217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525800775658 + 25525800775659.

It is an arithmetic number, because the mean of its divisors is an integer number (25525800775659).

Almost surely, 2^{51051601551317} is an apocalyptic number.

It is an amenable number.

51051601551317 is a deficient number, since it is larger than the sum of its proper divisors (1).

51051601551317 is an equidigital number, since it uses as much as digits as its factorization.

51051601551317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78750, while the sum is 41.

The spelling of 51051601551317 in words is "fifty-one trillion, fifty-one billion, six hundred one million, five hundred fifty-one thousand, three hundred seventeen".