521080 has 32 divisors (see below), whose sum is σ = 1340640. Its totient is φ = 178560.

The previous prime is 521063. The next prime is 521107. The reversal of 521080 is 80125.

521080 = T₁₄₁ + T₁₄₂ + ... + T₁₈₀.

It is a happy number.

It is an Ulam number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 651 + ... + 1210.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁵²¹⁰⁸⁰ is an apocalyptic number.

It is an amenable number.

521080 is an abundant number, since it is smaller than the sum of its proper divisors (819560).

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

521080 is a wasteful number, since it uses less digits than its factorization.

521080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 521080 is about 721.8587119375. The cubic root of 521080 is about 80.4701482617.

The spelling of 521080 in words is "five hundred twenty-one thousand, eighty".