135321575 has 12 divisors (see below), whose sum is σ = 170305320. Its totient is φ = 106640160.

The previous prime is 135321523. The next prime is 135321577. The reversal of 135321575 is 575123531.

135321575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135321575 - 2¹⁶ = 135256039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135321577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38720 + ... + 42069.

It is an arithmetic number, because the mean of its divisors is an integer number (14192110).

Almost surely, 2^135321575 is an apocalyptic number.

135321575 is a deficient number, since it is larger than the sum of its proper divisors (34983745).

135321575 is an equidigital number, since it uses as much as digits as its factorization.

135321575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80866 (or 80861 counting only the distinct ones).

The product of its digits is 15750, while the sum is 32.

The square root of 135321575 is about 11632.7801921983. The cubic root of 135321575 is about 513.3997836149.

The spelling of 135321575 in words is "one hundred thirty-five million, three hundred twenty-one thousand, five hundred seventy-five".