135621452 has 12 divisors (see below), whose sum is σ = 237528816. Its totient is φ = 67756080.

The previous prime is 135621443. The next prime is 135621457. The reversal of 135621452 is 254126531.

135621452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (135621457) 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, 7799 + ... + 18222.

It is an arithmetic number, because the mean of its divisors is an integer number (19794068).

Almost surely, 2^135621452 is an apocalyptic number.

It is an amenable number.

135621452 is a deficient number, since it is larger than the sum of its proper divisors (101907364).

135621452 is a wasteful number, since it uses less digits than its factorization.

135621452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27328 (or 27326 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 135621452 is about 11645.6623684529. The cubic root of 135621452 is about 513.7787406839.

Adding to 135621452 its reverse (254126531), we get a palindrome (389747983).

The spelling of 135621452 in words is "one hundred thirty-five million, six hundred twenty-one thousand, four hundred fifty-two".