272541809 has 2 divisors, whose sum is σ = 272541810. Its totient is φ = 272541808.

The previous prime is 272541791. The next prime is 272541853. The reversal of 272541809 is 908145272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227919409 + 44622400 = 15097^2 + 6680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272541809 is a prime.

It is not a weakly prime, because it can be changed into another prime (272541859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136270904 + 136270905.

It is an arithmetic number, because the mean of its divisors is an integer number (136270905).

Almost surely, 2^272541809 is an apocalyptic number.

It is an amenable number.

272541809 is a deficient number, since it is larger than the sum of its proper divisors (1).

272541809 is an equidigital number, since it uses as much as digits as its factorization.

272541809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 272541809 is about 16508.8403287451. The cubic root of 272541809 is about 648.3522834575.

The spelling of 272541809 in words is "two hundred seventy-two million, five hundred forty-one thousand, eight hundred nine".