324921 has 16 divisors (see below), whose sum is σ = 480384. Its totient is φ = 194304.

The previous prime is 324901. The next prime is 324931. The reversal of 324921 is 129423.

It is not a de Polignac number, because 324921 - 2⁵ = 324889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (324901) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1035 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (30024).

2³²⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

324921 is a deficient number, since it is larger than the sum of its proper divisors (155463).

324921 is a wasteful number, since it uses less digits than its factorization.

324921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its digits is 432, while the sum is 21.

The square root of 324921 is about 570.0184207550. The cubic root of 324921 is about 68.7478721104.

Subtracting from 324921 its sum of digits (21), we obtain a square (324900 = 570²).

The spelling of 324921 in words is "three hundred twenty-four thousand, nine hundred twenty-one".