23041561 has 4 divisors (see below), whose sum is σ = 24043392. Its totient is φ = 22039732.

The previous prime is 23041553. The next prime is 23041567. The reversal of 23041561 is 16514032.

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 23041561 - 2³ = 23041553 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23041567) 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, 500881 + ... + 500926.

It is an arithmetic number, because the mean of its divisors is an integer number (6010848).

Almost surely, 2^23041561 is an apocalyptic number.

It is an amenable number.

23041561 is a deficient number, since it is larger than the sum of its proper divisors (1001831).

23041561 is a wasteful number, since it uses less digits than its factorization.

23041561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001830.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 23041561 is about 4800.1626014126. The cubic root of 23041561 is about 284.5578904993.

Adding to 23041561 its reverse (16514032), we get a palindrome (39555593).

The spelling of 23041561 in words is "twenty-three million, forty-one thousand, five hundred sixty-one".