23643055 has 4 divisors (see below), whose sum is σ = 28371672. Its totient is φ = 18914440.

The previous prime is 23643047. The next prime is 23643089. The reversal of 23643055 is 55034632.

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

It is not a de Polignac number, because 23643055 - 2³ = 23643047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2364301 + ... + 2364310.

It is an arithmetic number, because the mean of its divisors is an integer number (7092918).

Almost surely, 2^23643055 is an apocalyptic number.

23643055 is a deficient number, since it is larger than the sum of its proper divisors (4728617).

23643055 is an equidigital number, since it uses as much as digits as its factorization.

23643055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728616.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 23643055 is about 4862.4124670785. The cubic root of 23643055 is about 287.0127550410.

Adding to 23643055 its reverse (55034632), we get a palindrome (78677687).

The spelling of 23643055 in words is "twenty-three million, six hundred forty-three thousand, fifty-five".