13504417 has 4 divisors (see below), whose sum is σ = 13536916. Its totient is φ = 13471920.

The previous prime is 13504411. The next prime is 13504423. The reversal of 13504417 is 71440531.

13504417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71440531 = 263 ⋅271637.

It is an interprime number because it is at equal distance from previous prime (13504411) and next prime (13504423).

It can be written as a sum of positive squares in 2 ways, for example, as 6765201 + 6739216 = 2601^2 + 2596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13504417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13504391 and 13504400.

It is not an unprimeable number, because it can be changed into a prime (13504411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15618 + ... + 16459.

It is an arithmetic number, because the mean of its divisors is an integer number (3384229).

Almost surely, 2^13504417 is an apocalyptic number.

It is an amenable number.

13504417 is a deficient number, since it is larger than the sum of its proper divisors (32499).

13504417 is an equidigital number, since it uses as much as digits as its factorization.

13504417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32498.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 13504417 is about 3674.8356425832. The cubic root of 13504417 is about 238.1361236689.

Adding to 13504417 its reverse (71440531), we get a palindrome (84944948).

The spelling of 13504417 in words is "thirteen million, five hundred four thousand, four hundred seventeen".