521946 has 24 divisors (see below), whose sum is σ = 1145664. Its totient is φ = 171720.

The previous prime is 521929. The next prime is 521981. The reversal of 521946 is 649125.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1791 + ... + 2061.

It is an arithmetic number, because the mean of its divisors is an integer number (47736).

2⁵²¹⁹⁴⁶ is an apocalyptic number.

521946 is an abundant number, since it is smaller than the sum of its proper divisors (623718).

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

521946 is a wasteful number, since it uses less digits than its factorization.

521946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 383 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 521946 is about 722.4583032951. The cubic root of 521946 is about 80.5147022515.

The spelling of 521946 in words is "five hundred twenty-one thousand, nine hundred forty-six".