520560 has 80 divisors (see below), whose sum is σ = 1800480. Its totient is φ = 138240.

The previous prime is 520549. The next prime is 520567. The reversal of 520560 is 65025.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520560.

It is not an unprimeable number, because it can be changed into a prime (520567) by changing a digit.

520560 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 15 ways as a sum of consecutive naturals, for example, 2040 + ... + 2280.

It is an arithmetic number, because the mean of its divisors is an integer number (22506).

2⁵²⁰⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900240).

520560 is an abundant number, since it is smaller than the sum of its proper divisors (1279920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520560 is a wasteful number, since it uses less digits than its factorization.

520560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 520560 is about 721.4984407468. The cubic root of 520560 is about 80.4433715646.

520560 divided by its sum of digits (18) gives a triangular number (28920 = T₂₄₀).

Adding to 520560 its reverse (65025), we get a palindrome (585585).

Subtracting from 520560 its reverse (65025), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 520560 in words is "five hundred twenty thousand, five hundred sixty".