272744161 has 4 divisors (see below), whose sum is σ = 273431572. Its totient is φ = 272056752.

The previous prime is 272744123. The next prime is 272744167. The reversal of 272744161 is 161447272.

It is a happy number.

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 111936400 + 160807761 = 10580^2 + 12681^2 .

It is a cyclic number.

It is not a de Polignac number, because 272744161 - 2⁷ = 272744033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272744167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343110 + ... + 343903.

It is an arithmetic number, because the mean of its divisors is an integer number (68357893).

Almost surely, 2^272744161 is an apocalyptic number.

It is an amenable number.

272744161 is a deficient number, since it is larger than the sum of its proper divisors (687411).

272744161 is an equidigital number, since it uses as much as digits as its factorization.

272744161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687410.

The product of its digits is 18816, while the sum is 34.

The square root of 272744161 is about 16514.9677868290. The cubic root of 272744161 is about 648.5127027903.

The spelling of 272744161 in words is "two hundred seventy-two million, seven hundred forty-four thousand, one hundred sixty-one".