5220320513 has 2 divisors, whose sum is σ = 5220320514. Its totient is φ = 5220320512.

The previous prime is 5220320461. The next prime is 5220320563. The reversal of 5220320513 is 3150230225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4728900289 + 491420224 = 68767^2 + 22168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5220320513 is a prime.

It is not a weakly prime, because it can be changed into another prime (5220320563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610160256 + 2610160257.

It is an arithmetic number, because the mean of its divisors is an integer number (2610160257).

Almost surely, 2^5220320513 is an apocalyptic number.

It is an amenable number.

5220320513 is a deficient number, since it is larger than the sum of its proper divisors (1).

5220320513 is an equidigital number, since it uses as much as digits as its factorization.

5220320513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 5220320513 is about 72251.7855350302. The cubic root of 5220320513 is about 1734.7319983468.

Adding to 5220320513 its reverse (3150230225), we get a palindrome (8370550738).

The spelling of 5220320513 in words is "five billion, two hundred twenty million, three hundred twenty thousand, five hundred thirteen".