52552765621 has 2 divisors, whose sum is σ = 52552765622. Its totient is φ = 52552765620.

The previous prime is 52552765597. The next prime is 52552765637. The reversal of 52552765621 is 12656725525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39726070596 + 12826695025 = 199314^2 + 113255^2 .

It is a cyclic number.

It is not a de Polignac number, because 52552765621 - 2⁷ = 52552765493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52552765651) 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, 26276382810 + 26276382811.

It is an arithmetic number, because the mean of its divisors is an integer number (26276382811).

Almost surely, 2^52552765621 is an apocalyptic number.

It is an amenable number.

52552765621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52552765621 is an equidigital number, since it uses as much as digits as its factorization.

52552765621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260000, while the sum is 46.

The spelling of 52552765621 in words is "fifty-two billion, five hundred fifty-two million, seven hundred sixty-five thousand, six hundred twenty-one".