7224289 has 2 divisors, whose sum is σ = 7224290. Its totient is φ = 7224288.

The previous prime is 7224281. The next prime is 7224311. The reversal of 7224289 is 9824227.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6932689 + 291600 = 2633^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 7224289 - 2³ = 7224281 is a prime.

It is not a weakly prime, because it can be changed into another prime (7224281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612144 + 3612145.

It is an arithmetic number, because the mean of its divisors is an integer number (3612145).

Almost surely, 2^7224289 is an apocalyptic number.

It is an amenable number.

7224289 is a deficient number, since it is larger than the sum of its proper divisors (1).

7224289 is an equidigital number, since it uses as much as digits as its factorization.

7224289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 7224289 is about 2687.8037502764. The cubic root of 7224289 is about 193.3147699841.

The spelling of 7224289 in words is "seven million, two hundred twenty-four thousand, two hundred eighty-nine".