852599509 has 2 divisors, whose sum is σ = 852599510. Its totient is φ = 852599508.

The previous prime is 852599497. The next prime is 852599513. The reversal of 852599509 is 905995258.

It is a happy number.

852599509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 832322500 + 20277009 = 28850^2 + 4503^2 .

It is a cyclic number.

It is not a de Polignac number, because 852599509 - 2¹³ = 852591317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (852599569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426299754 + 426299755.

It is an arithmetic number, because the mean of its divisors is an integer number (426299755).

Almost surely, 2^852599509 is an apocalyptic number.

It is an amenable number.

852599509 is a deficient number, since it is larger than the sum of its proper divisors (1).

852599509 is an equidigital number, since it uses as much as digits as its factorization.

852599509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458000, while the sum is 52.

The square root of 852599509 is about 29199.3066527272. The cubic root of 852599509 is about 948.2329141754.

The spelling of 852599509 in words is "eight hundred fifty-two million, five hundred ninety-nine thousand, five hundred nine".