52040509 has 2 divisors, whose sum is σ = 52040510. Its totient is φ = 52040508.

The previous prime is 52040497. The next prime is 52040561. The reversal of 52040509 is 90504025.

52040509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51768025 + 272484 = 7195^2 + 522^2 .

It is a cyclic number.

It is not a de Polignac number, because 52040509 - 2⁵ = 52040477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52040579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26020254 + 26020255.

It is an arithmetic number, because the mean of its divisors is an integer number (26020255).

Almost surely, 2^52040509 is an apocalyptic number.

It is an amenable number.

52040509 is a deficient number, since it is larger than the sum of its proper divisors (1).

52040509 is an equidigital number, since it uses as much as digits as its factorization.

52040509 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 25.

The square root of 52040509 is about 7213.9107978960. The cubic root of 52040509 is about 373.3480137899.

The spelling of 52040509 in words is "fifty-two million, forty thousand, five hundred nine".