163775273 has 4 divisors (see below), whose sum is σ = 163817220. Its totient is φ = 163733328.

The previous prime is 163775243. The next prime is 163775299. The reversal of 163775273 is 372577361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147671104 + 16104169 = 12152^2 + 4013^2 .

It is a cyclic number.

It is not a de Polignac number, because 163775273 - 2¹² = 163771177 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 163775273.

It is not an unprimeable number, because it can be changed into a prime (163775243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14438 + ... + 23151.

It is an arithmetic number, because the mean of its divisors is an integer number (40954305).

Almost surely, 2^163775273 is an apocalyptic number.

It is an amenable number.

163775273 is a deficient number, since it is larger than the sum of its proper divisors (41947).

163775273 is an equidigital number, since it uses as much as digits as its factorization.

163775273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41946.

The product of its digits is 185220, while the sum is 41.

The square root of 163775273 is about 12797.4713517945. The cubic root of 163775273 is about 547.1202351034.

The spelling of 163775273 in words is "one hundred sixty-three million, seven hundred seventy-five thousand, two hundred seventy-three".