135529 has 4 divisors (see below), whose sum is σ = 136276. Its totient is φ = 134784.

The previous prime is 135511. The next prime is 135533. The reversal of 135529 is 925531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 925531 = 17 ⋅54443.

It can be written as a sum of positive squares in 2 ways, for example, as 5929 + 129600 = 77^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 135529 - 2⁵ = 135497 is a prime.

It is an Ulam number.

It is a Duffinian number.

135529 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (135559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (34069).

2¹³⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

135529 is a deficient number, since it is larger than the sum of its proper divisors (747).

135529 is an equidigital number, since it uses as much as digits as its factorization.

135529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746.

The product of its digits is 1350, while the sum is 25.

The square root of 135529 is about 368.1426354010. The cubic root of 135529 is about 51.3661967934.

The spelling of 135529 in words is "one hundred thirty-five thousand, five hundred twenty-nine".