520189 has 4 divisors (see below), whose sum is σ = 524124. Its totient is φ = 516256.

The previous prime is 520151. The next prime is 520193. The reversal of 520189 is 981025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116964 + 403225 = 342^2 + 635^2 .

It is a cyclic number.

It is not a de Polignac number, because 520189 - 2¹³ = 511997 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 (520129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (131031).

2⁵²⁰¹⁸⁹ is an apocalyptic number.

It is an amenable number.

520189 is a deficient number, since it is larger than the sum of its proper divisors (3935).

520189 is a wasteful number, since it uses less digits than its factorization.

520189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 520189 is about 721.2412911086. The cubic root of 520189 is about 80.4242565195.

The spelling of 520189 in words is "five hundred twenty thousand, one hundred eighty-nine".