273221 has 4 divisors (see below), whose sum is σ = 294252. Its totient is φ = 252192.

The previous prime is 273193. The next prime is 273233. The reversal of 273221 is 122372.

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 12100 + 261121 = 110^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 273221 - 2⁶ = 273157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273221.

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 273221.

It is not an unprimeable number, because it can be changed into a prime (273271) 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, 10496 + ... + 10521.

It is an arithmetic number, because the mean of its divisors is an integer number (73563).

2²⁷³²²¹ is an apocalyptic number.

It is an amenable number.

273221 is a deficient number, since it is larger than the sum of its proper divisors (21031).

273221 is a wasteful number, since it uses less digits than its factorization.

273221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21030.

The product of its digits is 168, while the sum is 17.

The square root of 273221 is about 522.7054619956. The cubic root of 273221 is about 64.8890414648.

Adding to 273221 its reverse (122372), we get a palindrome (395593).

It can be divided in two parts, 273 and 221, that added together give a palindrome (494).

The spelling of 273221 in words is "two hundred seventy-three thousand, two hundred twenty-one", and thus it is an iban number.