520205213 has 8 divisors (see below), whose sum is σ = 571113120. Its totient is φ = 469900080.

The previous prime is 520205207. The next prime is 520205221. The reversal of 520205213 is 312502025.

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

It is a cyclic number.

It is not a de Polignac number, because 520205213 - 2⁴ = 520205197 is a prime.

It is a super-2 number, since 2×520205213² = 541226927264750738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520205233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148883 + ... + 152336.

It is an arithmetic number, because the mean of its divisors is an integer number (71389140).

Almost surely, 2^520205213 is an apocalyptic number.

It is an amenable number.

520205213 is a deficient number, since it is larger than the sum of its proper divisors (50907907).

520205213 is a wasteful number, since it uses less digits than its factorization.

520205213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301387.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 520205213 is about 22808.0076508230. The cubic root of 520205213 is about 804.2509205228.

Adding to 520205213 its reverse (312502025), we get a palindrome (832707238).

The spelling of 520205213 in words is "five hundred twenty million, two hundred five thousand, two hundred thirteen".