135523452 has 72 divisors (see below), whose sum is σ = 340090576. Its totient is φ = 41969664.

The previous prime is 135523417. The next prime is 135523459. The reversal of 135523452 is 254325531.

135523452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135523459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234588 + ... + 235164.

Almost surely, 2^135523452 is an apocalyptic number.

135523452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135523452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170045288).

135523452 is an abundant number, since it is smaller than the sum of its proper divisors (204567124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135523452 is a wasteful number, since it uses less digits than its factorization.

135523452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 642 counting only the distinct ones).

The product of its digits is 18000, while the sum is 30.

The square root of 135523452 is about 11641.4540328947. The cubic root of 135523452 is about 513.6549587688.

Adding to 135523452 its reverse (254325531), we get a palindrome (389848983).

The spelling of 135523452 in words is "one hundred thirty-five million, five hundred twenty-three thousand, four hundred fifty-two".