504384257 has 4 divisors (see below), whose sum is σ = 543183060. Its totient is φ = 465585456.

The previous prime is 504384253. The next prime is 504384313. The reversal of 504384257 is 752483405.

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 126315121 + 378069136 = 11239^2 + 19444^2 .

It is a cyclic number.

It is not a de Polignac number, because 504384257 - 2² = 504384253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 504384257.

It is not an unprimeable number, because it can be changed into a prime (504384253) 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, 19399382 + ... + 19399407.

It is an arithmetic number, because the mean of its divisors is an integer number (135795765).

Almost surely, 2^504384257 is an apocalyptic number.

It is an amenable number.

504384257 is a deficient number, since it is larger than the sum of its proper divisors (38798803).

504384257 is a wasteful number, since it uses less digits than its factorization.

504384257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38798802.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 504384257 is about 22458.5007736492. The cubic root of 504384257 is about 796.0136363118.

The spelling of 504384257 in words is "five hundred four million, three hundred eighty-four thousand, two hundred fifty-seven".