520205 has 16 divisors (see below), whose sum is σ = 725760. Its totient is φ = 350592.

The previous prime is 520193. The next prime is 520213. The reversal of 520205 is 502025.

It is a cyclic number.

It is not a de Polignac number, because 520205 - 2¹⁴ = 503821 is a prime.

It is a super-2 number, since 2×520205² = 541226484050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 520205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3032 + ... + 3198.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁵²⁰²⁰⁵ is an apocalyptic number.

It is an amenable number.

520205 is a deficient number, since it is larger than the sum of its proper divisors (205555).

520205 is a wasteful number, since it uses less digits than its factorization.

520205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 520205 is about 721.2523830117. The cubic root of 520205 is about 80.4250810755.

It can be divided in two parts, 52020 and 5, that multiplied together give a square (260100 = 510²).

The spelling of 520205 in words is "five hundred twenty thousand, two hundred five".