52788194821 has 2 divisors, whose sum is σ = 52788194822. Its totient is φ = 52788194820.

The previous prime is 52788194803. The next prime is 52788194831. The reversal of 52788194821 is 12849188725.

52788194821 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., 48097314721 + 4690880100 = 219311^2 + 68490^2 .

It is a cyclic number.

It is not a de Polignac number, because 52788194821 - 2¹¹ = 52788192773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52788194831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26394097410 + 26394097411.

It is an arithmetic number, because the mean of its divisors is an integer number (26394097411).

Almost surely, 2^52788194821 is an apocalyptic number.

It is an amenable number.

52788194821 is a deficient number, since it is larger than the sum of its proper divisors (1).

52788194821 is an equidigital number, since it uses as much as digits as its factorization.

52788194821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2580480, while the sum is 55.

The spelling of 52788194821 in words is "fifty-two billion, seven hundred eighty-eight million, one hundred ninety-four thousand, eight hundred twenty-one".