22057217 has 16 divisors (see below), whose sum is σ = 27885312. Its totient is φ = 16977600.

The previous prime is 22057201. The next prime is 22057229. The reversal of 22057217 is 71275022.

It is a cyclic number.

It is not a de Polignac number, because 22057217 - 2⁴ = 22057201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22057267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92 + ... + 6642.

It is an arithmetic number, because the mean of its divisors is an integer number (1742832).

Almost surely, 2^22057217 is an apocalyptic number.

It is an amenable number.

22057217 is a deficient number, since it is larger than the sum of its proper divisors (5828095).

22057217 is a wasteful number, since it uses less digits than its factorization.

22057217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 22057217 is about 4696.5111519084. The cubic root of 22057217 is about 280.4466383623.

The spelling of 22057217 in words is "twenty-two million, fifty-seven thousand, two hundred seventeen".