13201565 has 16 divisors (see below), whose sum is σ = 17273088. Its totient is φ = 9627456.

The previous prime is 13201541. The next prime is 13201577. The reversal of 13201565 is 56510231.

13201565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13201565 - 2¹⁶ = 13136029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13201565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4172 + ... + 6618.

It is an arithmetic number, because the mean of its divisors is an integer number (1079568).

Almost surely, 2^13201565 is an apocalyptic number.

It is an amenable number.

13201565 is a deficient number, since it is larger than the sum of its proper divisors (4071523).

13201565 is a wasteful number, since it uses less digits than its factorization.

13201565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 13201565 is about 3633.3957945701. The cubic root of 13201565 is about 236.3424896582.

Adding to 13201565 its reverse (56510231), we get a palindrome (69711796).

The spelling of 13201565 in words is "thirteen million, two hundred one thousand, five hundred sixty-five".