272161709 has 2 divisors, whose sum is σ = 272161710. Its totient is φ = 272161708.

The previous prime is 272161661. The next prime is 272161759. The reversal of 272161709 is 907161272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158206084 + 113955625 = 12578^2 + 10675^2 .

It is a cyclic number.

It is not a de Polignac number, because 272161709 - 2²⁰ = 271113133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272161759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136080854 + 136080855.

It is an arithmetic number, because the mean of its divisors is an integer number (136080855).

Almost surely, 2^272161709 is an apocalyptic number.

It is an amenable number.

272161709 is a deficient number, since it is larger than the sum of its proper divisors (1).

272161709 is an equidigital number, since it uses as much as digits as its factorization.

272161709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 272161709 is about 16497.3242982006. The cubic root of 272161709 is about 648.0507354029.

The spelling of 272161709 in words is "two hundred seventy-two million, one hundred sixty-one thousand, seven hundred nine".