20135153 has 4 divisors (see below), whose sum is σ = 20323440. Its totient is φ = 19946868.

The previous prime is 20135147. The next prime is 20135183. The reversal of 20135153 is 35153102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20135153 - 2⁸ = 20134897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20135113) 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, 93983 + ... + 94196.

It is an arithmetic number, because the mean of its divisors is an integer number (5080860).

Almost surely, 2^20135153 is an apocalyptic number.

It is an amenable number.

20135153 is a deficient number, since it is larger than the sum of its proper divisors (188287).

20135153 is a wasteful number, since it uses less digits than its factorization.

20135153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188286.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 20135153 is about 4487.2210776827. The cubic root of 20135153 is about 272.0518256568.

Adding to 20135153 its reverse (35153102), we get a palindrome (55288255).

The spelling of 20135153 in words is "twenty million, one hundred thirty-five thousand, one hundred fifty-three".