12534569 has 2 divisors, whose sum is σ = 12534570. Its totient is φ = 12534568.

The previous prime is 12534551. The next prime is 12534589. The reversal of 12534569 is 96543521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8970025 + 3564544 = 2995^2 + 1888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12534569 is a prime.

It is a super-2 number, since 2×12534569² = 314230840031522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12534539) 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, 6267284 + 6267285.

It is an arithmetic number, because the mean of its divisors is an integer number (6267285).

Almost surely, 2^12534569 is an apocalyptic number.

It is an amenable number.

12534569 is a deficient number, since it is larger than the sum of its proper divisors (1).

12534569 is an equidigital number, since it uses as much as digits as its factorization.

12534569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 12534569 is about 3540.4193254472. The cubic root of 12534569 is about 232.2931848771.

The spelling of 12534569 in words is "twelve million, five hundred thirty-four thousand, five hundred sixty-nine".