22250447 has 2 divisors, whose sum is σ = 22250448. Its totient is φ = 22250446.

The previous prime is 22250443. The next prime is 22250471. The reversal of 22250447 is 74405222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22250447 - 2² = 22250443 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22250443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11125223 + 11125224.

It is an arithmetic number, because the mean of its divisors is an integer number (11125224).

Almost surely, 2^22250447 is an apocalyptic number.

22250447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22250447 is an equidigital number, since it uses as much as digits as its factorization.

22250447 is an evil number, because the sum of its binary digits is even.

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

The square root of 22250447 is about 4717.0379476956. The cubic root of 22250447 is about 281.2631999072.

Adding to 22250447 its reverse (74405222), we get a palindrome (96655669).

The spelling of 22250447 in words is "twenty-two million, two hundred fifty thousand, four hundred forty-seven".