520217 has 8 divisors (see below), whose sum is σ = 559872. Its totient is φ = 481600.

The previous prime is 520213. The next prime is 520241. The reversal of 520217 is 712025.

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 520217 - 2² = 520213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520195 and 520204.

It is not an unprimeable number, because it can be changed into a prime (520213) 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, 992 + ... + 1422.

It is an arithmetic number, because the mean of its divisors is an integer number (69984).

2⁵²⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

520217 is a deficient number, since it is larger than the sum of its proper divisors (39655).

520217 is a wasteful number, since it uses less digits than its factorization.

520217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 520217 is about 721.2607018270. The cubic root of 520217 is about 80.4256994814.

It can be divided in two parts, 520 and 217, that added together give a palindrome (737).

The spelling of 520217 in words is "five hundred twenty thousand, two hundred seventeen".