22148447 has 2 divisors, whose sum is σ = 22148448. Its totient is φ = 22148446.

The previous prime is 22148417. The next prime is 22148479. The reversal of 22148447 is 74484122.

It is an a-pointer prime, because the next prime (22148479) can be obtained adding 22148447 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22148447 - 2²² = 17954143 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 (22148407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074223 + 11074224.

It is an arithmetic number, because the mean of its divisors is an integer number (11074224).

Almost surely, 2^22148447 is an apocalyptic number.

22148447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22148447 is an equidigital number, since it uses as much as digits as its factorization.

22148447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 32.

The square root of 22148447 is about 4706.2136585582. The cubic root of 22148447 is about 280.8327546727.

The spelling of 22148447 in words is "twenty-two million, one hundred forty-eight thousand, four hundred forty-seven".