204454221 has 8 divisors (see below), whose sum is σ = 272700960. Its totient is φ = 136255152.

The previous prime is 204454219. The next prime is 204454253. The reversal of 204454221 is 122454402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 204454221 - 2¹ = 204454219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204454191 and 204454200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204450221) 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, 286 + ... + 20223.

It is an arithmetic number, because the mean of its divisors is an integer number (34087620).

Almost surely, 2^204454221 is an apocalyptic number.

It is an amenable number.

204454221 is a deficient number, since it is larger than the sum of its proper divisors (68246739).

204454221 is a wasteful number, since it uses less digits than its factorization.

204454221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23835.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 204454221 is about 14298.7489312877. The cubic root of 204454221 is about 589.1131183453.

It can be divided in two parts, 2044 and 54221, that added together give a palindrome (56265).

The spelling of 204454221 in words is "two hundred four million, four hundred fifty-four thousand, two hundred twenty-one".