504323221 has 16 divisors (see below), whose sum is σ = 535265280. Its totient is φ = 474410160.

The previous prime is 504323219. The next prime is 504323227. The reversal of 504323221 is 122323405.

It is a cyclic number.

It is not a de Polignac number, because 504323221 - 2¹ = 504323219 is a prime.

It is a super-2 number, since 2×504323221² = 508683822479629682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 504323192 and 504323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504323227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317796 + ... + 319378.

It is an arithmetic number, because the mean of its divisors is an integer number (33454080).

Almost surely, 2^504323221 is an apocalyptic number.

It is an amenable number.

504323221 is a deficient number, since it is larger than the sum of its proper divisors (30942059).

504323221 is a wasteful number, since it uses less digits than its factorization.

504323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 504323221 is about 22457.1418706834. The cubic root of 504323221 is about 795.9815262373.

Adding to 504323221 its reverse (122323405), we get a palindrome (626646626).

The spelling of 504323221 in words is "five hundred four million, three hundred twenty-three thousand, two hundred twenty-one".