521486 has 12 divisors (see below), whose sum is σ = 898632. Its totient is φ = 222336.

The previous prime is 521483. The next prime is 521491. The reversal of 521486 is 684125.

It is a zygodrome in base 3.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 521486.

It is not an unprimeable number, because it can be changed into a prime (521483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2606 + ... + 2798.

It is an arithmetic number, because the mean of its divisors is an integer number (74886).

2⁵²¹⁴⁸⁶ is an apocalyptic number.

521486 is a deficient number, since it is larger than the sum of its proper divisors (377146).

521486 is an equidigital number, since it uses as much as digits as its factorization.

521486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 202 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 521486 is about 722.1398756474. The cubic root of 521486 is about 80.4910423015.

The spelling of 521486 in words is "five hundred twenty-one thousand, four hundred eighty-six".