272991 has 4 divisors (see below), whose sum is σ = 363992. Its totient is φ = 181992.

The previous prime is 272989. The next prime is 272999. The reversal of 272991 is 199272.

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

It is not a de Polignac number, because 272991 - 2¹ = 272989 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 272991.

It is not an unprimeable number, because it can be changed into a prime (272999) 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, 45496 + ... + 45501.

It is an arithmetic number, because the mean of its divisors is an integer number (90998).

2²⁷²⁹⁹¹ is an apocalyptic number.

272991 is a deficient number, since it is larger than the sum of its proper divisors (91001).

272991 is an equidigital number, since it uses as much as digits as its factorization.

272991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91000.

The product of its digits is 2268, while the sum is 30.

The square root of 272991 is about 522.4854064948. The cubic root of 272991 is about 64.8708282853.

The spelling of 272991 in words is "two hundred seventy-two thousand, nine hundred ninety-one".