52381048649 has 2 divisors, whose sum is σ = 52381048650. Its totient is φ = 52381048648.

The previous prime is 52381048619. The next prime is 52381048663. The reversal of 52381048649 is 94684018325.

52381048649 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., 39314958400 + 13066090249 = 198280^2 + 114307^2 .

It is a cyclic number.

It is not a de Polignac number, because 52381048649 - 2¹² = 52381044553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52381048597 and 52381048606.

It is not a weakly prime, because it can be changed into another prime (52381048619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26190524324 + 26190524325.

It is an arithmetic number, because the mean of its divisors is an integer number (26190524325).

Almost surely, 2^52381048649 is an apocalyptic number.

It is an amenable number.

52381048649 is a deficient number, since it is larger than the sum of its proper divisors (1).

52381048649 is an equidigital number, since it uses as much as digits as its factorization.

52381048649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 52381048649 in words is "fifty-two billion, three hundred eighty-one million, forty-eight thousand, six hundred forty-nine".