504221 has 2 divisors, whose sum is σ = 504222. Its totient is φ = 504220.

The previous prime is 504209. The next prime is 504247. The reversal of 504221 is 122405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 121 = 710^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 504221 - 2⁶ = 504157 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 504196 and 504205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252110 + 252111.

It is an arithmetic number, because the mean of its divisors is an integer number (252111).

2⁵⁰⁴²²¹ is an apocalyptic number.

It is an amenable number.

504221 is a deficient number, since it is larger than the sum of its proper divisors (1).

504221 is an equidigital number, since it uses as much as digits as its factorization.

504221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 504221 is about 710.0852061549. The cubic root of 504221 is about 79.5927743582.

Adding to 504221 its reverse (122405), we get a palindrome (626626).

The spelling of 504221 in words is "five hundred four thousand, two hundred twenty-one".