504919421 has 2 divisors, whose sum is σ = 504919422. Its totient is φ = 504919420.

The previous prime is 504919409. The next prime is 504919423. The reversal of 504919421 is 124919405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394459321 + 110460100 = 19861^2 + 10510^2 .

It is a cyclic number.

It is not a de Polignac number, because 504919421 - 2¹⁴ = 504903037 is a prime.

Together with 504919423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504919423) 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, 252459710 + 252459711.

It is an arithmetic number, because the mean of its divisors is an integer number (252459711).

Almost surely, 2^504919421 is an apocalyptic number.

It is an amenable number.

504919421 is a deficient number, since it is larger than the sum of its proper divisors (1).

504919421 is an equidigital number, since it uses as much as digits as its factorization.

504919421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 504919421 is about 22470.4121235014. The cubic root of 504919421 is about 796.2950667621.

The spelling of 504919421 in words is "five hundred four million, nine hundred nineteen thousand, four hundred twenty-one".