5243021513 has 2 divisors, whose sum is σ = 5243021514. Its totient is φ = 5243021512.

The previous prime is 5243021491. The next prime is 5243021521. The reversal of 5243021513 is 3151203425.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4853630224 + 389391289 = 69668^2 + 19733^2 .

It is a cyclic number.

It is not a de Polignac number, because 5243021513 - 2²⁰ = 5241972937 is a prime.

It is not a weakly prime, because it can be changed into another prime (5243021533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2621510756 + 2621510757.

It is an arithmetic number, because the mean of its divisors is an integer number (2621510757).

Almost surely, 2^5243021513 is an apocalyptic number.

It is an amenable number.

5243021513 is a deficient number, since it is larger than the sum of its proper divisors (1).

5243021513 is an equidigital number, since it uses as much as digits as its factorization.

5243021513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 5243021513 is about 72408.7115822399. The cubic root of 5243021513 is about 1737.2429045818.

Adding to 5243021513 its reverse (3151203425), we get a palindrome (8394224938).

The spelling of 5243021513 in words is "five billion, two hundred forty-three million, twenty-one thousand, five hundred thirteen".