52209569 has 2 divisors, whose sum is σ = 52209570. Its totient is φ = 52209568.

The previous prime is 52209559. The next prime is 52209593. The reversal of 52209569 is 96590225.

52209569 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., 44729344 + 7480225 = 6688^2 + 2735^2 .

It is a cyclic number.

It is not a de Polignac number, because 52209569 - 2¹² = 52205473 is a prime.

It is a super-2 number, since 2×52209569² = 5451678190331522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (52209529) 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, 26104784 + 26104785.

It is an arithmetic number, because the mean of its divisors is an integer number (26104785).

Almost surely, 2^52209569 is an apocalyptic number.

It is an amenable number.

52209569 is a deficient number, since it is larger than the sum of its proper divisors (1).

52209569 is an equidigital number, since it uses as much as digits as its factorization.

52209569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 52209569 is about 7225.6189354269. The cubic root of 52209569 is about 373.7518657789.

The spelling of 52209569 in words is "fifty-two million, two hundred nine thousand, five hundred sixty-nine".