23553969 has 4 divisors (see below), whose sum is σ = 31405296. Its totient is φ = 15702644.

The previous prime is 23553953. The next prime is 23553973. The reversal of 23553969 is 96935532.

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 23553969 - 2⁴ = 23553953 is a prime.

It is a super-2 number, since 2×23553969² = 1109578911305922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23553969.

It is not an unprimeable number, because it can be changed into a prime (23553949) 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, 3925659 + ... + 3925664.

It is an arithmetic number, because the mean of its divisors is an integer number (7851324).

Almost surely, 2^23553969 is an apocalyptic number.

It is an amenable number.

23553969 is a deficient number, since it is larger than the sum of its proper divisors (7851327).

23553969 is an equidigital number, since it uses as much as digits as its factorization.

23553969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851326.

The product of its digits is 218700, while the sum is 42.

The square root of 23553969 is about 4853.2431424770. The cubic root of 23553969 is about 286.6518174809.

The spelling of 23553969 in words is "twenty-three million, five hundred fifty-three thousand, nine hundred sixty-nine".