23805161 has 4 divisors (see below), whose sum is σ = 24840192. Its totient is φ = 22770132.

The previous prime is 23805137. The next prime is 23805163. The reversal of 23805161 is 16150832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23805161 - 2¹⁸ = 23543017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23805161.

It is not an unprimeable number, because it can be changed into a prime (23805163) 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, 517481 + ... + 517526.

It is an arithmetic number, because the mean of its divisors is an integer number (6210048).

Almost surely, 2^23805161 is an apocalyptic number.

It is an amenable number.

23805161 is a deficient number, since it is larger than the sum of its proper divisors (1035031).

23805161 is a wasteful number, since it uses less digits than its factorization.

23805161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035030.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 23805161 is about 4879.0532893175. The cubic root of 23805161 is about 287.6672186638.

Adding to 23805161 its reverse (16150832), we get a palindrome (39955993).

The spelling of 23805161 in words is "twenty-three million, eight hundred five thousand, one hundred sixty-one".