51656050529 has 2 divisors, whose sum is σ = 51656050530. Its totient is φ = 51656050528.

The previous prime is 51656050471. The next prime is 51656050531. The reversal of 51656050529 is 92505065615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49527612304 + 2128438225 = 222548^2 + 46135^2 .

It is a cyclic number.

It is not a de Polignac number, because 51656050529 - 2²⁰ = 51655001953 is a prime.

Together with 51656050531, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51656050529.

It is not a weakly prime, because it can be changed into another prime (51656050729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25828025264 + 25828025265.

It is an arithmetic number, because the mean of its divisors is an integer number (25828025265).

Almost surely, 2^51656050529 is an apocalyptic number.

It is an amenable number.

51656050529 is a deficient number, since it is larger than the sum of its proper divisors (1).

51656050529 is an equidigital number, since it uses as much as digits as its factorization.

51656050529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405000, while the sum is 44.

The spelling of 51656050529 in words is "fifty-one billion, six hundred fifty-six million, fifty thousand, five hundred twenty-nine".