52402309 has 2 divisors, whose sum is σ = 52402310. Its totient is φ = 52402308.

The previous prime is 52402297. The next prime is 52402327. The reversal of 52402309 is 90320425.

It is a happy number.

52402309 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., 52157284 + 245025 = 7222^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 52402309 - 2¹³ = 52394117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52402379) 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, 26201154 + 26201155.

It is an arithmetic number, because the mean of its divisors is an integer number (26201155).

Almost surely, 2^52402309 is an apocalyptic number.

It is an amenable number.

52402309 is a deficient number, since it is larger than the sum of its proper divisors (1).

52402309 is an equidigital number, since it uses as much as digits as its factorization.

52402309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 52402309 is about 7238.9439146881. The cubic root of 52402309 is about 374.2112226366.

The spelling of 52402309 in words is "fifty-two million, four hundred two thousand, three hundred nine".