135530 has 8 divisors (see below), whose sum is σ = 243972. Its totient is φ = 54208.

The previous prime is 135511. The next prime is 135533. The reversal of 135530 is 35531.

It can be written as a sum of positive squares in 2 ways, for example, as 134689 + 841 = 367^2 + 29^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 135499 and 135508.

It is not an unprimeable number, because it can be changed into a prime (135533) by changing a digit.

135530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 6767 + ... + 6786.

2¹³⁵⁵³⁰ is an apocalyptic number.

135530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135530 is a deficient number, since it is larger than the sum of its proper divisors (108442).

135530 is a wasteful number, since it uses less digits than its factorization.

135530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13560.

The product of its (nonzero) digits is 225, while the sum is 17.

The square root of 135530 is about 368.1439935677. The cubic root of 135530 is about 51.3663231282.

Subtracting from 135530 its reverse (35531), we obtain a palindrome (99999).

The spelling of 135530 in words is "one hundred thirty-five thousand, five hundred thirty".