22520779 has 2 divisors, whose sum is σ = 22520780. Its totient is φ = 22520778.

The previous prime is 22520761. The next prime is 22520789. The reversal of 22520779 is 97702522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22520779 - 2⁵ = 22520747 is a prime.

It is not a weakly prime, because it can be changed into another prime (22520759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11260389 + 11260390.

It is an arithmetic number, because the mean of its divisors is an integer number (11260390).

Almost surely, 2^22520779 is an apocalyptic number.

22520779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22520779 is an equidigital number, since it uses as much as digits as its factorization.

22520779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 22520779 is about 4745.6062837113. The cubic root of 22520779 is about 282.3976876481.

The spelling of 22520779 in words is "twenty-two million, five hundred twenty thousand, seven hundred seventy-nine".