521120 has 24 divisors (see below), whose sum is σ = 1231524. Its totient is φ = 208384.

The previous prime is 521119. The next prime is 521137. The reversal of 521120 is 21125.

It can be written as a sum of positive squares in 2 ways, for example, as 512656 + 8464 = 716^2 + 92^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521120.

It is an unprimeable 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, 1469 + ... + 1788.

2⁵²¹¹²⁰ is an apocalyptic number.

It is an amenable number.

521120 is an abundant number, since it is smaller than the sum of its proper divisors (710404).

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

521120 is a wasteful number, since it uses less digits than its factorization.

521120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 521120 is about 721.8864176586. The cubic root of 521120 is about 80.4722072697.

Adding to 521120 its reverse (21125), we get a palindrome (542245).

The spelling of 521120 in words is "five hundred twenty-one thousand, one hundred twenty".