51561006160597 has 2 divisors, whose sum is σ = 51561006160598. Its totient is φ = 51561006160596.

The previous prime is 51561006160561. The next prime is 51561006160607. The reversal of 51561006160597 is 79506160016515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45736897564836 + 5824108595761 = 6762906^2 + 2413319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51561006160597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51561006164597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25780503080298 + 25780503080299.

It is an arithmetic number, because the mean of its divisors is an integer number (25780503080299).

Almost surely, 2^{51561006160597} is an apocalyptic number.

It is an amenable number.

51561006160597 is a deficient number, since it is larger than the sum of its proper divisors (1).

51561006160597 is an equidigital number, since it uses as much as digits as its factorization.

51561006160597 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 51561006160597 in words is "fifty-one trillion, five hundred sixty-one billion, six million, one hundred sixty thousand, five hundred ninety-seven".