24222257 has 2 divisors, whose sum is σ = 24222258. Its totient is φ = 24222256.

The previous prime is 24222241. The next prime is 24222277. The reversal of 24222257 is 75222242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 495616 = 4871^2 + 704^2 .

It is a cyclic number.

It is not a de Polignac number, because 24222257 - 2⁴ = 24222241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24222227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12111128 + 12111129.

It is an arithmetic number, because the mean of its divisors is an integer number (12111129).

Almost surely, 2^24222257 is an apocalyptic number.

It is an amenable number.

24222257 is a deficient number, since it is larger than the sum of its proper divisors (1).

24222257 is an equidigital number, since it uses as much as digits as its factorization.

24222257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 26.

The square root of 24222257 is about 4921.6112199157. The cubic root of 24222257 is about 289.3375963268.

Adding to 24222257 its reverse (75222242), we get a palindrome (99444499).

The spelling of 24222257 in words is "twenty-four million, two hundred twenty-two thousand, two hundred fifty-seven".