22561267 has 2 divisors, whose sum is σ = 22561268. Its totient is φ = 22561266.

The previous prime is 22561247. The next prime is 22561313. The reversal of 22561267 is 76216522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22561267 is a prime.

It is not a weakly prime, because it can be changed into another prime (22561247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11280633 + 11280634.

It is an arithmetic number, because the mean of its divisors is an integer number (11280634).

Almost surely, 2^22561267 is an apocalyptic number.

22561267 is a deficient number, since it is larger than the sum of its proper divisors (1).

22561267 is an equidigital number, since it uses as much as digits as its factorization.

22561267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 22561267 is about 4749.8702087531. The cubic root of 22561267 is about 282.5668184545.

Adding to 22561267 its reverse (76216522), we get a palindrome (98777789).

The spelling of 22561267 in words is "twenty-two million, five hundred sixty-one thousand, two hundred sixty-seven".