504475421 has 2 divisors, whose sum is σ = 504475422. Its totient is φ = 504475420.

The previous prime is 504475379. The next prime is 504475451. The reversal of 504475421 is 124574405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502387396 + 2088025 = 22414^2 + 1445^2 .

It is a cyclic number.

It is not a de Polignac number, because 504475421 - 2¹⁸ = 504213277 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (504475451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252237710 + 252237711.

It is an arithmetic number, because the mean of its divisors is an integer number (252237711).

Almost surely, 2^504475421 is an apocalyptic number.

It is an amenable number.

504475421 is a deficient number, since it is larger than the sum of its proper divisors (1).

504475421 is an equidigital number, since it uses as much as digits as its factorization.

504475421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 504475421 is about 22460.5302920479. The cubic root of 504475421 is about 796.0615914270.

The spelling of 504475421 in words is "five hundred four million, four hundred seventy-five thousand, four hundred twenty-one".