520546 has 8 divisors (see below), whose sum is σ = 840924. Its totient is φ = 240240.

The previous prime is 520529. The next prime is 520547. The reversal of 520546 is 645025.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 112225 = 639^2 + 335^2 .

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

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (520547) by changing a digit.

520546 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9985 + ... + 10036.

2⁵²⁰⁵⁴⁶ is an apocalyptic number.

520546 is a deficient number, since it is larger than the sum of its proper divisors (320378).

520546 is a wasteful number, since it uses less digits than its factorization.

520546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 520546 is about 721.4887386509. The cubic root of 520546 is about 80.4426504071.

The spelling of 520546 in words is "five hundred twenty thousand, five hundred forty-six".