272272161 has 8 divisors (see below), whose sum is σ = 414890944. Its totient is φ = 155584080.

The previous prime is 272272129. The next prime is 272272171. The reversal of 272272161 is 161272272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 272272161 - 2⁵ = 272272129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272272111) 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 7 ways as a sum of consecutive naturals, for example, 6482650 + ... + 6482691.

It is an arithmetic number, because the mean of its divisors is an integer number (51861368).

Almost surely, 2^272272161 is an apocalyptic number.

272272161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

272272161 is a deficient number, since it is larger than the sum of its proper divisors (142618783).

272272161 is a wasteful number, since it uses less digits than its factorization.

272272161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12965351.

The product of its digits is 4704, while the sum is 30.

The square root of 272272161 is about 16500.6715317892. The cubic root of 272272161 is about 648.1383901766.

The spelling of 272272161 in words is "two hundred seventy-two million, two hundred seventy-two thousand, one hundred sixty-one".