22247 has 2 divisors, whose sum is σ = 22248. Its totient is φ = 22246.

The previous prime is 22229. The next prime is 22259. The reversal of 22247 is 74222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22247 - 2⁸ = 21991 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2⁸ + 2¹⁰ + 2¹² + 4³ + 7⁵ .

It is a plaindrome in base 9 and base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11123 + 11124.

It is an arithmetic number, because the mean of its divisors is an integer number (11124).

2²²²⁴⁷ is an apocalyptic number.

22247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22247 is an equidigital number, since it uses as much as digits as its factorization.

22247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 17.

The square root of 22247 is about 149.1542825399. The cubic root of 22247 is about 28.1248674891.

Adding to 22247 its reverse (74222), we get a palindrome (96469).

The spelling of 22247 in words is "twenty-two thousand, two hundred forty-seven", and thus it is an iban number.