22761227 has 2 divisors, whose sum is σ = 22761228. Its totient is φ = 22761226.

The previous prime is 22761199. The next prime is 22761239. The reversal of 22761227 is 72216722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22761227 - 2²⁰ = 21712651 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22761227.

It is not a weakly prime, because it can be changed into another prime (22761257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11380613 + 11380614.

It is an arithmetic number, because the mean of its divisors is an integer number (11380614).

Almost surely, 2^22761227 is an apocalyptic number.

22761227 is a deficient number, since it is larger than the sum of its proper divisors (1).

22761227 is an equidigital number, since it uses as much as digits as its factorization.

22761227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 29.

The square root of 22761227 is about 4770.8727713072. The cubic root of 22761227 is about 283.3991587159.

Adding to 22761227 its reverse (72216722), we get a palindrome (94977949).

The spelling of 22761227 in words is "twenty-two million, seven hundred sixty-one thousand, two hundred twenty-seven".