272669161 has 4 divisors (see below), whose sum is σ = 273370500. Its totient is φ = 271967824.

The previous prime is 272669123. The next prime is 272669167. The reversal of 272669161 is 161966272.

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 78234025 + 194435136 = 8845^2 + 13944^2 .

It is a cyclic number.

It is not a de Polignac number, because 272669161 - 2¹¹ = 272667113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272669167) 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, 350086 + ... + 350863.

It is an arithmetic number, because the mean of its divisors is an integer number (68342625).

Almost surely, 2^272669161 is an apocalyptic number.

It is an amenable number.

272669161 is a deficient number, since it is larger than the sum of its proper divisors (701339).

272669161 is an equidigital number, since it uses as much as digits as its factorization.

272669161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701338.

The product of its digits is 54432, while the sum is 40.

The square root of 272669161 is about 16512.6969632462. The cubic root of 272669161 is about 648.4532540240.

The spelling of 272669161 in words is "two hundred seventy-two million, six hundred sixty-nine thousand, one hundred sixty-one".