51972596497 has 2 divisors, whose sum is σ = 51972596498. Its totient is φ = 51972596496.

The previous prime is 51972596443. The next prime is 51972596513. The reversal of 51972596497 is 79469527915.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44204642001 + 7767954496 = 210249^2 + 88136^2 .

It is a cyclic number.

It is not a de Polignac number, because 51972596497 - 2¹¹ = 51972594449 is a prime.

It is not a weakly prime, because it can be changed into another prime (51972596437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25986298248 + 25986298249.

It is an arithmetic number, because the mean of its divisors is an integer number (25986298249).

Almost surely, 2^51972596497 is an apocalyptic number.

It is an amenable number.

51972596497 is a deficient number, since it is larger than the sum of its proper divisors (1).

51972596497 is an equidigital number, since it uses as much as digits as its factorization.

51972596497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42865200, while the sum is 64.

The spelling of 51972596497 in words is "fifty-one billion, nine hundred seventy-two million, five hundred ninety-six thousand, four hundred ninety-seven".