13645241 has 4 divisors (see below), whose sum is σ = 13652772. Its totient is φ = 13637712.

The previous prime is 13645223. The next prime is 13645259. The reversal of 13645241 is 14254631.

13645241 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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14254631 = 29 ⋅491539.

It is an interprime number because it is at equal distance from previous prime (13645223) and next prime (13645259).

It can be written as a sum of positive squares in 2 ways, for example, as 12931216 + 714025 = 3596^2 + 845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13645241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13645241.

It is not an unprimeable number, because it can be changed into a prime (13642241) 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, 791 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (3413193).

Almost surely, 2^13645241 is an apocalyptic number.

It is an amenable number.

13645241 is a deficient number, since it is larger than the sum of its proper divisors (7531).

13645241 is an equidigital number, since it uses as much as digits as its factorization.

13645241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530.

The product of its digits is 2880, while the sum is 26.

The square root of 13645241 is about 3693.9465345346. The cubic root of 13645241 is about 238.9610237381.

Adding to 13645241 its reverse (14254631), we get a palindrome (27899872).

The spelling of 13645241 in words is "thirteen million, six hundred forty-five thousand, two hundred forty-one".