135523443 has 8 divisors (see below), whose sum is σ = 197125056. Its totient is φ = 82135400.

The previous prime is 135523417. The next prime is 135523459. The reversal of 135523443 is 344325531.

135523443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 135523443 - 2⁵ = 135523411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135523443.

It is not an unprimeable number, because it can be changed into a prime (135523403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2053353 + ... + 2053418.

It is an arithmetic number, because the mean of its divisors is an integer number (24640632).

Almost surely, 2^135523443 is an apocalyptic number.

135523443 is a deficient number, since it is larger than the sum of its proper divisors (61601613).

135523443 is a wasteful number, since it uses less digits than its factorization.

135523443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106785.

The product of its digits is 21600, while the sum is 30.

The square root of 135523443 is about 11641.4536463450. The cubic root of 135523443 is about 513.6549473983.

Adding to 135523443 its reverse (344325531), we get a palindrome (479848974).

The spelling of 135523443 in words is "one hundred thirty-five million, five hundred twenty-three thousand, four hundred forty-three".