324552421 has 2 divisors, whose sum is σ = 324552422. Its totient is φ = 324552420.

The previous prime is 324552407. The next prime is 324552439. The reversal of 324552421 is 124255423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305760196 + 18792225 = 17486^2 + 4335^2 .

It is a cyclic number.

It is not a de Polignac number, because 324552421 - 2¹⁵ = 324519653 is a prime.

It is a super-2 number, since 2×324552421² = 210668547953922482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 324552421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324552121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162276210 + 162276211.

It is an arithmetic number, because the mean of its divisors is an integer number (162276211).

Almost surely, 2^324552421 is an apocalyptic number.

It is an amenable number.

324552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

324552421 is an equidigital number, since it uses as much as digits as its factorization.

324552421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 28.

The square root of 324552421 is about 18015.3384925180. The cubic root of 324552421 is about 687.2186721569.

The spelling of 324552421 in words is "three hundred twenty-four million, five hundred fifty-two thousand, four hundred twenty-one".