324404561 has 4 divisors (see below), whose sum is σ = 349358772. Its totient is φ = 299450352.

The previous prime is 324404503. The next prime is 324404579. The reversal of 324404561 is 165404423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 217385536 + 107019025 = 14744^2 + 10345^2 .

It is a cyclic number.

It is not a de Polignac number, because 324404561 - 2¹⁴ = 324388177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (324404501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12477086 + ... + 12477111.

It is an arithmetic number, because the mean of its divisors is an integer number (87339693).

Almost surely, 2^324404561 is an apocalyptic number.

It is an amenable number.

324404561 is a deficient number, since it is larger than the sum of its proper divisors (24954211).

324404561 is a wasteful number, since it uses less digits than its factorization.

324404561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24954210.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 324404561 is about 18011.2342997364. The cubic root of 324404561 is about 687.1142949890.

Adding to 324404561 its reverse (165404423), we get a palindrome (489808984).

The spelling of 324404561 in words is "three hundred twenty-four million, four hundred four thousand, five hundred sixty-one".