51355316051597 has 2 divisors, whose sum is σ = 51355316051598. Its totient is φ = 51355316051596.

The previous prime is 51355316051551. The next prime is 51355316051737. The reversal of 51355316051597 is 79515061355315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51175623993796 + 179692057801 = 7153714^2 + 423901^2 .

It is a cyclic number.

It is not a de Polignac number, because 51355316051597 - 2¹⁴ = 51355316035213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51355316051197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25677658025798 + 25677658025799.

It is an arithmetic number, because the mean of its divisors is an integer number (25677658025799).

Almost surely, 2^{51355316051597} is an apocalyptic number.

It is an amenable number.

51355316051597 is a deficient number, since it is larger than the sum of its proper divisors (1).

51355316051597 is an equidigital number, since it uses as much as digits as its factorization.

51355316051597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10631250, while the sum is 56.

The spelling of 51355316051597 in words is "fifty-one trillion, three hundred fifty-five billion, three hundred sixteen million, fifty-one thousand, five hundred ninety-seven".