504520531 has 2 divisors, whose sum is σ = 504520532. Its totient is φ = 504520530.

The previous prime is 504520517. The next prime is 504520537. The reversal of 504520531 is 135025405.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 504520531 - 2⁷ = 504520403 is a prime.

It is a super-2 number, since 2×504520531² = 509081932401043922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 504520496 and 504520505.

It is not a weakly prime, because it can be changed into another prime (504520537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252260265 + 252260266.

It is an arithmetic number, because the mean of its divisors is an integer number (252260266).

Almost surely, 2^504520531 is an apocalyptic number.

504520531 is a deficient number, since it is larger than the sum of its proper divisors (1).

504520531 is an equidigital number, since it uses as much as digits as its factorization.

504520531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 504520531 is about 22461.5344756319. The cubic root of 504520531 is about 796.0853185612.

Adding to 504520531 its reverse (135025405), we get a palindrome (639545936).

The spelling of 504520531 in words is "five hundred four million, five hundred twenty thousand, five hundred thirty-one".