521960 has 16 divisors (see below), whose sum is σ = 1174500. Its totient is φ = 208768.

The previous prime is 521929. The next prime is 521981. The reversal of 521960 is 69125.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 676 = 722^2 + 26^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6485 + ... + 6564.

2⁵²¹⁹⁶⁰ is an apocalyptic number.

It is an amenable number.

521960 is an abundant number, since it is smaller than the sum of its proper divisors (652540).

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

521960 is a wasteful number, since it uses less digits than its factorization.

521960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060 (or 13056 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 521960 is about 722.4679923706. The cubic root of 521960 is about 80.5154221189.

The spelling of 521960 in words is "five hundred twenty-one thousand, nine hundred sixty".