272105 has 4 divisors (see below), whose sum is σ = 326532. Its totient is φ = 217680.

The previous prime is 272093. The next prime is 272131. The reversal of 272105 is 501272.

272105 is nontrivially palindromic in base 15.

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

It can be written as a sum of positive squares in 2 ways, for example, as 177241 + 94864 = 421^2 + 308^2 .

It is not a de Polignac number, because 272105 - 2⁸ = 271849 is a prime.

It is a super-2 number, since 2×272105² = 148082262050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 272105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27206 + ... + 27215.

It is an arithmetic number, because the mean of its divisors is an integer number (81633).

2²⁷²¹⁰⁵ is an apocalyptic number.

It is an amenable number.

272105 is a deficient number, since it is larger than the sum of its proper divisors (54427).

272105 is an equidigital number, since it uses as much as digits as its factorization.

272105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54426.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 272105 is about 521.6368468580. The cubic root of 272105 is about 64.8005721892.

Adding to 272105 its reverse (501272), we get a palindrome (773377).

The spelling of 272105 in words is "two hundred seventy-two thousand, one hundred five".