5200636921 has 2 divisors, whose sum is σ = 5200636922. Its totient is φ = 5200636920.

The previous prime is 5200636901. The next prime is 5200636937. The reversal of 5200636921 is 1296360025.

5200636921 is digitally balanced in base 3, 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., 4845691321 + 354945600 = 69611^2 + 18840^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200636921 - 2⁹ = 5200636409 is a prime.

It is not a weakly prime, because it can be changed into another prime (5200636901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600318460 + 2600318461.

It is an arithmetic number, because the mean of its divisors is an integer number (2600318461).

Almost surely, 2^5200636921 is an apocalyptic number.

It is an amenable number.

5200636921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5200636921 is an equidigital number, since it uses as much as digits as its factorization.

5200636921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 5200636921 is about 72115.4416266031. The cubic root of 5200636921 is about 1732.5489418809.

Adding to 5200636921 its reverse (1296360025), we get a palindrome (6496996946).

The spelling of 5200636921 in words is "five billion, two hundred million, six hundred thirty-six thousand, nine hundred twenty-one".