22385161 has 4 divisors (see below), whose sum is σ = 22399812. Its totient is φ = 22370512.

The previous prime is 22385159. The next prime is 22385171. The reversal of 22385161 is 16158322.

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 11095561 + 11289600 = 3331^2 + 3360^2 .

It is a cyclic number.

It is not a de Polignac number, because 22385161 - 2¹ = 22385159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22385101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4726 + ... + 8191.

It is an arithmetic number, because the mean of its divisors is an integer number (5599953).

Almost surely, 2^22385161 is an apocalyptic number.

It is an amenable number.

22385161 is a deficient number, since it is larger than the sum of its proper divisors (14651).

22385161 is a wasteful number, since it uses less digits than its factorization.

22385161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14650.

The product of its digits is 2880, while the sum is 28.

The square root of 22385161 is about 4731.2959112700. The cubic root of 22385161 is about 281.8296885883.

The spelling of 22385161 in words is "twenty-two million, three hundred eighty-five thousand, one hundred sixty-one".