135535523 has 4 divisors (see below), whose sum is σ = 137392248. Its totient is φ = 133678800.

The previous prime is 135535513. The next prime is 135535529. The reversal of 135535523 is 325535531.

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 135535523 - 2⁴ = 135535507 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 135535523.

It is not an unprimeable number, because it can be changed into a prime (135535529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 928253 + ... + 928398.

It is an arithmetic number, because the mean of its divisors is an integer number (34348062).

Almost surely, 2^135535523 is an apocalyptic number.

135535523 is a deficient number, since it is larger than the sum of its proper divisors (1856725).

135535523 is an equidigital number, since it uses as much as digits as its factorization.

135535523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1856724.

The product of its digits is 33750, while the sum is 32.

The square root of 135535523 is about 11641.9724703334. The cubic root of 135535523 is about 513.6702086385.

The spelling of 135535523 in words is "one hundred thirty-five million, five hundred thirty-five thousand, five hundred twenty-three".