52513309 has 2 divisors, whose sum is σ = 52513310. Its totient is φ = 52513308.

The previous prime is 52513297. The next prime is 52513313. The reversal of 52513309 is 90331525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50765625 + 1747684 = 7125^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 52513309 - 2⁹ = 52512797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52513379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26256654 + 26256655.

It is an arithmetic number, because the mean of its divisors is an integer number (26256655).

Almost surely, 2^52513309 is an apocalyptic number.

It is an amenable number.

52513309 is a deficient number, since it is larger than the sum of its proper divisors (1).

52513309 is an equidigital number, since it uses as much as digits as its factorization.

52513309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 52513309 is about 7246.6067231498. The cubic root of 52513309 is about 374.4752577678.

The spelling of 52513309 in words is "fifty-two million, five hundred thirteen thousand, three hundred nine".