454221 has 8 divisors (see below), whose sum is σ = 672960. Its totient is φ = 302796.

The previous prime is 454219. The next prime is 454229. The reversal of 454221 is 122454.

It is not a de Polignac number, because 454221 - 2¹ = 454219 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 454194 and 454203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8385 + ... + 8438.

It is an arithmetic number, because the mean of its divisors is an integer number (84120).

2⁴⁵⁴²²¹ is an apocalyptic number.

It is an amenable number.

454221 is a deficient number, since it is larger than the sum of its proper divisors (218739).

454221 is a wasteful number, since it uses less digits than its factorization.

454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16832 (or 16826 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 454221 is about 673.9591975780. The cubic root of 454221 is about 76.8697973874.

Adding to 454221 its reverse (122454), we get a palindrome (576675).

The spelling of 454221 in words is "four hundred fifty-four thousand, two hundred twenty-one".