163353253 has 4 divisors (see below), whose sum is σ = 186689440. Its totient is φ = 140017068.

The previous prime is 163353233. The next prime is 163353263. The reversal of 163353253 is 352353361.

163353253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 163353253 - 2¹⁷ = 163222181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163353233) 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, 11668083 + ... + 11668096.

It is an arithmetic number, because the mean of its divisors is an integer number (46672360).

Almost surely, 2^163353253 is an apocalyptic number.

It is an amenable number.

163353253 is a deficient number, since it is larger than the sum of its proper divisors (23336187).

163353253 is an equidigital number, since it uses as much as digits as its factorization.

163353253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23336186.

The product of its digits is 24300, while the sum is 31.

The square root of 163353253 is about 12780.9723026067. The cubic root of 163353253 is about 546.6498867462.

The spelling of 163353253 in words is "one hundred sixty-three million, three hundred fifty-three thousand, two hundred fifty-three".