204224550 has 24 divisors (see below), whose sum is σ = 506477256. Its totient is φ = 54459840.

The previous prime is 204224549. The next prime is 204224551. The reversal of 204224550 is 55422402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204224549) and next prime (204224551).

It is a self number, because there is not a number n which added to its sum of digits gives 204224550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204224551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680599 + ... + 680898.

It is an arithmetic number, because the mean of its divisors is an integer number (21103219).

Almost surely, 2^204224550 is an apocalyptic number.

204224550 is an abundant number, since it is smaller than the sum of its proper divisors (302252706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204224550 is a wasteful number, since it uses less digits than its factorization.

204224550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361512 (or 1361507 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 204224550 is about 14290.7155174260. The cubic root of 204224550 is about 588.8924448317.

Adding to 204224550 its reverse (55422402), we get a palindrome (259646952).

The spelling of 204224550 in words is "two hundred four million, two hundred twenty-four thousand, five hundred fifty".