13508135 has 4 divisors (see below), whose sum is σ = 16209768. Its totient is φ = 10806504.

The previous prime is 13508119. The next prime is 13508137. The reversal of 13508135 is 53180531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13508135 - 2⁴ = 13508119 is a prime.

It is a super-2 number, since 2×13508135² = 364939422356450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13508137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350809 + ... + 1350818.

It is an arithmetic number, because the mean of its divisors is an integer number (4052442).

Almost surely, 2^13508135 is an apocalyptic number.

13508135 is a deficient number, since it is larger than the sum of its proper divisors (2701633).

13508135 is an equidigital number, since it uses as much as digits as its factorization.

13508135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701632.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 13508135 is about 3675.3414807335. The cubic root of 13508135 is about 238.1579759973.

Adding to 13508135 its reverse (53180531), we get a palindrome (66688666).

The spelling of 13508135 in words is "thirteen million, five hundred eight thousand, one hundred thirty-five".