22046161 has 4 divisors (see below), whose sum is σ = 23343012. Its totient is φ = 20749312.

The previous prime is 22046159. The next prime is 22046183. The reversal of 22046161 is 16164022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17380561 + 4665600 = 4169^2 + 2160^2 .

It is a cyclic number.

It is not a de Polignac number, because 22046161 - 2¹ = 22046159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22046131) 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 3 ways as a sum of consecutive naturals, for example, 648400 + ... + 648433.

It is an arithmetic number, because the mean of its divisors is an integer number (5835753).

Almost surely, 2^22046161 is an apocalyptic number.

It is an amenable number.

22046161 is a deficient number, since it is larger than the sum of its proper divisors (1296851).

22046161 is a wasteful number, since it uses less digits than its factorization.

22046161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296850.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 22046161 is about 4695.3339604335. Note that the first 3 decimals coincide. The cubic root of 22046161 is about 280.3997733350.

The spelling of 22046161 in words is "twenty-two million, forty-six thousand, one hundred sixty-one".