272817161 has 2 divisors, whose sum is σ = 272817162. Its totient is φ = 272817160.

The previous prime is 272817131. The next prime is 272817179. The reversal of 272817161 is 161718272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246490000 + 26327161 = 15700^2 + 5131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272817161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (272817101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136408580 + 136408581.

It is an arithmetic number, because the mean of its divisors is an integer number (136408581).

Almost surely, 2^272817161 is an apocalyptic number.

It is an amenable number.

272817161 is a deficient number, since it is larger than the sum of its proper divisors (1).

272817161 is an equidigital number, since it uses as much as digits as its factorization.

272817161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9408, while the sum is 35.

The square root of 272817161 is about 16517.1777552946. The cubic root of 272817161 is about 648.5705557908.

The spelling of 272817161 in words is "two hundred seventy-two million, eight hundred seventeen thousand, one hundred sixty-one".