272105891 has 4 divisors (see below), whose sum is σ = 272325000. Its totient is φ = 271886784.

The previous prime is 272105887. The next prime is 272105903. The reversal of 272105891 is 198501272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 272105891 - 2² = 272105887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (272105831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107681 + ... + 110178.

It is an arithmetic number, because the mean of its divisors is an integer number (68081250).

Almost surely, 2^272105891 is an apocalyptic number.

272105891 is a deficient number, since it is larger than the sum of its proper divisors (219109).

272105891 is a wasteful number, since it uses less digits than its factorization.

272105891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219108.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 272105891 is about 16495.6324825694. The cubic root of 272105891 is about 648.0064291835.

The spelling of 272105891 in words is "two hundred seventy-two million, one hundred five thousand, eight hundred ninety-one".