224804509 has 2 divisors, whose sum is σ = 224804510. Its totient is φ = 224804508.

The previous prime is 224804501. The next prime is 224804513. The reversal of 224804509 is 905408422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192598884 + 32205625 = 13878^2 + 5675^2 .

It is a cyclic number.

It is not a de Polignac number, because 224804509 - 2³ = 224804501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224804501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112402254 + 112402255.

It is an arithmetic number, because the mean of its divisors is an integer number (112402255).

Almost surely, 2^224804509 is an apocalyptic number.

It is an amenable number.

224804509 is a deficient number, since it is larger than the sum of its proper divisors (1).

224804509 is an equidigital number, since it uses as much as digits as its factorization.

224804509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 224804509 is about 14993.4822172836. The cubic root of 224804509 is about 608.0439980351.

The spelling of 224804509 in words is "two hundred twenty-four million, eight hundred four thousand, five hundred nine".