13565001 has 8 divisors (see below), whose sum is σ = 18104800. Its totient is φ = 9034272.

The previous prime is 13564981. The next prime is 13565003. The reversal of 13565001 is 10056531.

It is a happy number.

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

It is not a de Polignac number, because 13565001 - 2⁶ = 13564937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13565003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (2263100).

Almost surely, 2^13565001 is an apocalyptic number.

It is an amenable number.

13565001 is a deficient number, since it is larger than the sum of its proper divisors (4539799).

13565001 is a wasteful number, since it uses less digits than its factorization.

13565001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 13565001 is about 3683.0695078969. The cubic root of 13565001 is about 238.4917040656.

The spelling of 13565001 in words is "thirteen million, five hundred sixty-five thousand, one".