51704521324957 has 2 divisors, whose sum is σ = 51704521324958. Its totient is φ = 51704521324956.

The previous prime is 51704521324829. The next prime is 51704521324991. The reversal of 51704521324957 is 75942312540715.

51704521324957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38600200964836 + 13104320360121 = 6212906^2 + 3619989^2 .

It is a cyclic number.

It is not a de Polignac number, because 51704521324957 - 2⁷ = 51704521324829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51704521324898 and 51704521324907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51704521304957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852260662478 + 25852260662479.

It is an arithmetic number, because the mean of its divisors is an integer number (25852260662479).

Almost surely, 2^{51704521324957} is an apocalyptic number.

It is an amenable number.

51704521324957 is a deficient number, since it is larger than the sum of its proper divisors (1).

51704521324957 is an equidigital number, since it uses as much as digits as its factorization.

51704521324957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 51704521324957 in words is "fifty-one trillion, seven hundred four billion, five hundred twenty-one million, three hundred twenty-four thousand, nine hundred fifty-seven".