272326561 has 16 divisors (see below), whose sum is σ = 302233680. Its totient is φ = 243809280.

The previous prime is 272326531. The next prime is 272326567. The reversal of 272326561 is 165623272.

It can be written as a sum of positive squares in 8 ways, for example, as 24453025 + 247873536 = 4945^2 + 15744^2 .

It is not a de Polignac number, because 272326561 - 2⁵ = 272326529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272326567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59101 + ... + 63541.

It is an arithmetic number, because the mean of its divisors is an integer number (18889605).

Almost surely, 2^272326561 is an apocalyptic number.

It is an amenable number.

272326561 is a deficient number, since it is larger than the sum of its proper divisors (29907119).

272326561 is a wasteful number, since it uses less digits than its factorization.

272326561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596.

The product of its digits is 30240, while the sum is 34.

The square root of 272326561 is about 16502.3198672187. The cubic root of 272326561 is about 648.1815533365.

The spelling of 272326561 in words is "two hundred seventy-two million, three hundred twenty-six thousand, five hundred sixty-one".