504313521 has 4 divisors (see below), whose sum is σ = 672418032. Its totient is φ = 336209012.

The previous prime is 504313519. The next prime is 504313541. The reversal of 504313521 is 125313405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 504313521 - 2¹ = 504313519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 504313491 and 504313500.

It is not an unprimeable number, because it can be changed into a prime (504313501) 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, 84052251 + ... + 84052256.

It is an arithmetic number, because the mean of its divisors is an integer number (168104508).

Almost surely, 2^504313521 is an apocalyptic number.

It is an amenable number.

504313521 is a deficient number, since it is larger than the sum of its proper divisors (168104511).

504313521 is a wasteful number, since it uses less digits than its factorization.

504313521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168104510.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 504313521 is about 22456.9259027143. The cubic root of 504313521 is about 795.9764229820.

Adding to 504313521 its reverse (125313405), we get a palindrome (629626926).

The spelling of 504313521 in words is "five hundred four million, three hundred thirteen thousand, five hundred twenty-one".