13432565 has 4 divisors (see below), whose sum is σ = 16119084. Its totient is φ = 10746048.

The previous prime is 13432547. The next prime is 13432571. The reversal of 13432565 is 56523431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56523431 = 281 ⋅201151.

It can be written as a sum of positive squares in 2 ways, for example, as 8797156 + 4635409 = 2966^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 13432565 - 2¹⁰ = 13431541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343252 + ... + 1343261.

It is an arithmetic number, because the mean of its divisors is an integer number (4029771).

Almost surely, 2^13432565 is an apocalyptic number.

It is an amenable number.

13432565 is a deficient number, since it is larger than the sum of its proper divisors (2686519).

13432565 is an equidigital number, since it uses as much as digits as its factorization.

13432565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686518.

The product of its digits is 10800, while the sum is 29.

The square root of 13432565 is about 3665.0463844268. The cubic root of 13432565 is about 237.7130277024.

Adding to 13432565 its reverse (56523431), we get a palindrome (69955996).

The spelling of 13432565 in words is "thirteen million, four hundred thirty-two thousand, five hundred sixty-five".