135163621 has 8 divisors (see below), whose sum is σ = 138547584. Its totient is φ = 131810640.

The previous prime is 135163619. The next prime is 135163657. The reversal of 135163621 is 126361531.

135163621 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 135163621 - 2¹ = 135163619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135163621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135163601) 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, 1216 + ... + 16486.

It is an arithmetic number, because the mean of its divisors is an integer number (17318448).

Almost surely, 2^135163621 is an apocalyptic number.

It is an amenable number.

135163621 is a deficient number, since it is larger than the sum of its proper divisors (3383963).

135163621 is a wasteful number, since it uses less digits than its factorization.

135163621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15491.

The product of its digits is 3240, while the sum is 28.

The square root of 135163621 is about 11625.9890331963. The cubic root of 135163621 is about 513.1999506811.

The spelling of 135163621 in words is "one hundred thirty-five million, one hundred sixty-three thousand, six hundred twenty-one".