504344221 has 4 divisors (see below), whose sum is σ = 510011100. Its totient is φ = 498677344.

The previous prime is 504344173. The next prime is 504344251. The reversal of 504344221 is 122443405.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187005625 + 317338596 = 13675^2 + 17814^2 .

It is a cyclic number.

It is not a de Polignac number, because 504344221 - 2¹⁵ = 504311453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504344251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2833306 + ... + 2833483.

It is an arithmetic number, because the mean of its divisors is an integer number (127502775).

Almost surely, 2^504344221 is an apocalyptic number.

It is an amenable number.

504344221 is a deficient number, since it is larger than the sum of its proper divisors (5666879).

504344221 is an equidigital number, since it uses as much as digits as its factorization.

504344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666878.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 504344221 is about 22457.6094230886. The cubic root of 504344221 is about 795.9925742975.

Adding to 504344221 its reverse (122443405), we get a palindrome (626787626).

The spelling of 504344221 in words is "five hundred four million, three hundred forty-four thousand, two hundred twenty-one".