22055709 has 32 divisors (see below), whose sum is σ = 32886784. Its totient is φ = 13063680.

The previous prime is 22055707. The next prime is 22055711. The reversal of 22055709 is 90755022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22055707) and next prime (22055711).

It is not a de Polignac number, because 22055709 - 2¹ = 22055707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22055701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173604 + ... + 173730.

It is an arithmetic number, because the mean of its divisors is an integer number (1027712).

Almost surely, 2^22055709 is an apocalyptic number.

It is an amenable number.

22055709 is a deficient number, since it is larger than the sum of its proper divisors (10831075).

22055709 is a wasteful number, since it uses less digits than its factorization.

22055709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 22055709 is about 4696.3506044587. The cubic root of 22055709 is about 280.4402470578.

The spelling of 22055709 in words is "twenty-two million, fifty-five thousand, seven hundred nine".