521466 has 16 divisors (see below), whose sum is σ = 1137888. Its totient is φ = 158000.

The previous prime is 521447. The next prime is 521471. The reversal of 521466 is 664125.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521466.

It is an unprimeable number.

521466 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3885 + ... + 4016.

It is an arithmetic number, because the mean of its divisors is an integer number (71118).

2⁵²¹⁴⁶⁶ is an apocalyptic number.

521466 is an abundant number, since it is smaller than the sum of its proper divisors (616422).

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

521466 is a wasteful number, since it uses less digits than its factorization.

521466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7917.

The product of its digits is 1440, while the sum is 24.

The square root of 521466 is about 722.1260277819. The cubic root of 521466 is about 80.4900132924.

The spelling of 521466 in words is "five hundred twenty-one thousand, four hundred sixty-six".