22772791 has 2 divisors, whose sum is σ = 22772792. Its totient is φ = 22772790.

The previous prime is 22772759. The next prime is 22772803. The reversal of 22772791 is 19727722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22772791 - 2⁵ = 22772759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22772791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22772731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11386395 + 11386396.

It is an arithmetic number, because the mean of its divisors is an integer number (11386396).

Almost surely, 2^22772791 is an apocalyptic number.

22772791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22772791 is an equidigital number, since it uses as much as digits as its factorization.

22772791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24696, while the sum is 37.

The square root of 22772791 is about 4772.0845549927. The cubic root of 22772791 is about 283.4471448961.

The spelling of 22772791 in words is "twenty-two million, seven hundred seventy-two thousand, seven hundred ninety-one".