52803128621 has 2 divisors, whose sum is σ = 52803128622. Its totient is φ = 52803128620.

The previous prime is 52803128593. The next prime is 52803128641. The reversal of 52803128621 is 12682130825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45845233225 + 6957895396 = 214115^2 + 83414^2 .

It is a cyclic number.

It is not a de Polignac number, because 52803128621 - 2⁶ = 52803128557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52803128641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26401564310 + 26401564311.

It is an arithmetic number, because the mean of its divisors is an integer number (26401564311).

Almost surely, 2^52803128621 is an apocalyptic number.

It is an amenable number.

52803128621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52803128621 is an equidigital number, since it uses as much as digits as its factorization.

52803128621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 52803128621 in words is "fifty-two billion, eight hundred three million, one hundred twenty-eight thousand, six hundred twenty-one".