324561 has 4 divisors (see below), whose sum is σ = 432752. Its totient is φ = 216372.

The previous prime is 324557. The next prime is 324587. The reversal of 324561 is 165423.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 324561 - 2² = 324557 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (324161) 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 3 ways as a sum of consecutive naturals, for example, 54091 + ... + 54096.

It is an arithmetic number, because the mean of its divisors is an integer number (108188).

2³²⁴⁵⁶¹ is an apocalyptic number.

It is an amenable number.

324561 is a deficient number, since it is larger than the sum of its proper divisors (108191).

324561 is a wasteful number, since it uses less digits than its factorization.

324561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108190.

The product of its digits is 720, while the sum is 21.

The square root of 324561 is about 569.7025539701. The cubic root of 324561 is about 68.7224727262.

Adding to 324561 its reverse (165423), we get a palindrome (489984).

The spelling of 324561 in words is "three hundred twenty-four thousand, five hundred sixty-one".