135528613 has 4 divisors (see below), whose sum is σ = 147849408. Its totient is φ = 123207820.

The previous prime is 135528593. The next prime is 135528619. The reversal of 135528613 is 316825531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 316825531 = 11 ⋅28802321.

It is a cyclic number.

It is not a de Polignac number, because 135528613 - 2⁹ = 135528101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135528619) 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, 6160381 + ... + 6160402.

It is an arithmetic number, because the mean of its divisors is an integer number (36962352).

Almost surely, 2^135528613 is an apocalyptic number.

It is an amenable number.

135528613 is a deficient number, since it is larger than the sum of its proper divisors (12320795).

135528613 is a wasteful number, since it uses less digits than its factorization.

135528613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320794.

The product of its digits is 21600, while the sum is 34.

The square root of 135528613 is about 11641.6756955346. The cubic root of 135528613 is about 513.6614790169.

The spelling of 135528613 in words is "one hundred thirty-five million, five hundred twenty-eight thousand, six hundred thirteen".