520554 has 16 divisors (see below), whose sum is σ = 1052640. Its totient is φ = 171600.

The previous prime is 520549. The next prime is 520567. The reversal of 520554 is 455025.

520554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 520554.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 520554.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (65790).

2⁵²⁰⁵⁵⁴ is an apocalyptic number.

520554 is an abundant number, since it is smaller than the sum of its proper divisors (532086).

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

520554 is a wasteful number, since it uses less digits than its factorization.

520554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 520554 is about 721.4942827216. The cubic root of 520554 is about 80.4430624987.

Adding to 520554 its reverse (455025), we get a palindrome (975579).

The spelling of 520554 in words is "five hundred twenty thousand, five hundred fifty-four".