13504235 has 4 divisors (see below), whose sum is σ = 16205088. Its totient is φ = 10803384.

The previous prime is 13504219. The next prime is 13504259. The reversal of 13504235 is 53240531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53240531 = 149 ⋅357319.

It is a cyclic number.

It is not a de Polignac number, because 13504235 - 2⁴ = 13504219 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 13504235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350419 + ... + 1350428.

It is an arithmetic number, because the mean of its divisors is an integer number (4051272).

Almost surely, 2^13504235 is an apocalyptic number.

13504235 is a deficient number, since it is larger than the sum of its proper divisors (2700853).

13504235 is an equidigital number, since it uses as much as digits as its factorization.

13504235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700852.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13504235 is about 3674.8108794875. The cubic root of 13504235 is about 238.1350538715.

Adding to 13504235 its reverse (53240531), we get a palindrome (66744766).

The spelling of 13504235 in words is "thirteen million, five hundred four thousand, two hundred thirty-five".