13565401 has 8 divisors (see below), whose sum is σ = 13737600. Its totient is φ = 13394640.

The previous prime is 13565369. The next prime is 13565413. The reversal of 13565401 is 10456531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13565401 - 2⁵ = 13565369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13565441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50295 + ... + 50563.

It is an arithmetic number, because the mean of its divisors is an integer number (1717200).

Almost surely, 2^13565401 is an apocalyptic number.

It is an amenable number.

13565401 is a deficient number, since it is larger than the sum of its proper divisors (172199).

13565401 is a wasteful number, since it uses less digits than its factorization.

13565401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 13565401 is about 3683.1238100287. The cubic root of 13565401 is about 238.4940482292.

It can be divided in two parts, 135 and 65401, that added together give a 16-th power (65536 = 2¹⁶).

The spelling of 13565401 in words is "thirteen million, five hundred sixty-five thousand, four hundred one".