520324513 has 8 divisors (see below), whose sum is σ = 523100160. Its totient is φ = 517555200.

The previous prime is 520324489. The next prime is 520324529. The reversal of 520324513 is 315423025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520324513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520324813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294928 + ... + 296686.

It is an arithmetic number, because the mean of its divisors is an integer number (65387520).

Almost surely, 2^520324513 is an apocalyptic number.

It is an amenable number.

520324513 is a deficient number, since it is larger than the sum of its proper divisors (2775647).

520324513 is a wasteful number, since it uses less digits than its factorization.

520324513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 520324513 is about 22810.6228104364. The cubic root of 520324513 is about 804.3123961346.

Adding to 520324513 its reverse (315423025), we get a palindrome (835747538).

The spelling of 520324513 in words is "five hundred twenty million, three hundred twenty-four thousand, five hundred thirteen".