135216522 has 24 divisors (see below), whose sum is σ = 334822176. Its totient is φ = 38633256.

The previous prime is 135216511. The next prime is 135216527. The reversal of 135216522 is 225612531.

It is a happy number.

135216522 is a `hidden beast` number, since 1 + 3 + 5 + 2 + 1 + 652 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (135216527) 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 11 ways as a sum of consecutive naturals, for example, 536448 + ... + 536699.

It is an arithmetic number, because the mean of its divisors is an integer number (13950924).

Almost surely, 2^135216522 is an apocalyptic number.

135216522 is an abundant number, since it is smaller than the sum of its proper divisors (199605654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135216522 is a wasteful number, since it uses less digits than its factorization.

135216522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073162 (or 1073159 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 135216522 is about 11628.2639288933. The cubic root of 135216522 is about 513.2668948516.

The spelling of 135216522 in words is "one hundred thirty-five million, two hundred sixteen thousand, five hundred twenty-two".