520224613 has 4 divisors (see below), whose sum is σ = 520812000. Its totient is φ = 519637228.

The previous prime is 520224611. The next prime is 520224619. The reversal of 520224613 is 316422025.

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 520224613 - 2¹ = 520224611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520224611) 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, 292363 + ... + 294136.

It is an arithmetic number, because the mean of its divisors is an integer number (130203000).

Almost surely, 2^520224613 is an apocalyptic number.

It is an amenable number.

520224613 is a deficient number, since it is larger than the sum of its proper divisors (587387).

520224613 is an equidigital number, since it uses as much as digits as its factorization.

520224613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587386.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 520224613 is about 22808.4329360875. The cubic root of 520224613 is about 804.2609180350.

Adding to 520224613 its reverse (316422025), we get a palindrome (836646638).

The spelling of 520224613 in words is "five hundred twenty million, two hundred twenty-four thousand, six hundred thirteen".