135523727 has 4 divisors (see below), whose sum is σ = 135629040. Its totient is φ = 135418416.

The previous prime is 135523721. The next prime is 135523741. The reversal of 135523727 is 727325531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727325531 = 3947 ⋅184273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135523727 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 (135523721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50702 + ... + 53307.

It is an arithmetic number, because the mean of its divisors is an integer number (33907260).

Almost surely, 2^135523727 is an apocalyptic number.

135523727 is a deficient number, since it is larger than the sum of its proper divisors (105313).

135523727 is a wasteful number, since it uses less digits than its factorization.

135523727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105312.

The product of its digits is 44100, while the sum is 35.

The square root of 135523727 is about 11641.4658441280. The cubic root of 135523727 is about 513.6553061995.

The spelling of 135523727 in words is "one hundred thirty-five million, five hundred twenty-three thousand, seven hundred twenty-seven".