274221 has 6 divisors (see below), whose sum is σ = 396110. Its totient is φ = 182808.

The previous prime is 274213. The next prime is 274223. The reversal of 274221 is 122472.

It can be written as a sum of positive squares in only one way, i.e., 236196 + 38025 = 486^2 + 195^2 .

It is not a de Polignac number, because 274221 - 2³ = 274213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274194 and 274203.

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 274221.

It is not an unprimeable number, because it can be changed into a prime (274223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15226 + ... + 15243.

2²⁷⁴²²¹ is an apocalyptic number.

It is an amenable number.

274221 is a deficient number, since it is larger than the sum of its proper divisors (121889).

274221 is a wasteful number, since it uses less digits than its factorization.

274221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30475 (or 30472 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 274221 is about 523.6611499816. The cubic root of 274221 is about 64.9681105902.

Adding to 274221 its reverse (122472), we get a palindrome (396693).

The spelling of 274221 in words is "two hundred seventy-four thousand, two hundred twenty-one", and thus it is an iban number.