504230821 has 2 divisors, whose sum is σ = 504230822. Its totient is φ = 504230820.

The previous prime is 504230803. The next prime is 504230843. The reversal of 504230821 is 128032405.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387893025 + 116337796 = 19695^2 + 10786^2 .

It is a cyclic number.

It is not a de Polignac number, because 504230821 - 2⁵ = 504230789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504230021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252115410 + 252115411.

It is an arithmetic number, because the mean of its divisors is an integer number (252115411).

Almost surely, 2^504230821 is an apocalyptic number.

It is an amenable number.

504230821 is a deficient number, since it is larger than the sum of its proper divisors (1).

504230821 is an equidigital number, since it uses as much as digits as its factorization.

504230821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 504230821 is about 22455.0845244457. The cubic root of 504230821 is about 795.9329111281.

The spelling of 504230821 in words is "five hundred four million, two hundred thirty thousand, eight hundred twenty-one".