174221 has 2 divisors, whose sum is σ = 174222. Its totient is φ = 174220.

The previous prime is 174197. The next prime is 174241. The reversal of 174221 is 122471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98596 + 75625 = 314^2 + 275^2 .

It is an emirp because it is prime and its reverse (122471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 174221 - 2⁶ = 174157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 174221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (174241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87110 + 87111.

It is an arithmetic number, because the mean of its divisors is an integer number (87111).

2¹⁷⁴²²¹ is an apocalyptic number.

It is an amenable number.

174221 is a deficient number, since it is larger than the sum of its proper divisors (1).

174221 is an equidigital number, since it uses as much as digits as its factorization.

174221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 17.

The square root of 174221 is about 417.3978917053. The cubic root of 174221 is about 55.8513275829.

Adding to 174221 its reverse (122471), we get a palindrome (296692).

The spelling of 174221 in words is "one hundred seventy-four thousand, two hundred twenty-one", and thus it is an iban number.