52777552505521 has 2 divisors, whose sum is σ = 52777552505522. Its totient is φ = 52777552505520.

The previous prime is 52777552505477. The next prime is 52777552505543. The reversal of 52777552505521 is 12550525577725.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49673049463921 + 3104503041600 = 7047911^2 + 1761960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52777552505521 is a prime.

It is not a weakly prime, because it can be changed into another prime (52777552500521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26388776252760 + 26388776252761.

It is an arithmetic number, because the mean of its divisors is an integer number (26388776252761).

Almost surely, 2^{52777552505521} is an apocalyptic number.

It is an amenable number.

52777552505521 is a deficient number, since it is larger than the sum of its proper divisors (1).

52777552505521 is an equidigital number, since it uses as much as digits as its factorization.

52777552505521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42875000, while the sum is 58.

The spelling of 52777552505521 in words is "fifty-two trillion, seven hundred seventy-seven billion, five hundred fifty-two million, five hundred five thousand, five hundred twenty-one".