22056571 has 2 divisors, whose sum is σ = 22056572. Its totient is φ = 22056570.

The previous prime is 22056553. The next prime is 22056607. The reversal of 22056571 is 17565022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22056571 - 2⁹ = 22056059 is a prime.

It is not a weakly prime, because it can be changed into another prime (22056521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11028285 + 11028286.

It is an arithmetic number, because the mean of its divisors is an integer number (11028286).

Almost surely, 2^22056571 is an apocalyptic number.

22056571 is a deficient number, since it is larger than the sum of its proper divisors (1).

22056571 is an equidigital number, since it uses as much as digits as its factorization.

22056571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 22056571 is about 4696.4423769487. The cubic root of 22056571 is about 280.4439004784.

The spelling of 22056571 in words is "twenty-two million, fifty-six thousand, five hundred seventy-one".