23661453 has 4 divisors (see below), whose sum is σ = 31548608. Its totient is φ = 15774300.

The previous prime is 23661431. The next prime is 23661487. The reversal of 23661453 is 35416632.

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 not a de Polignac number, because 23661453 - 2¹⁸ = 23399309 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 23661453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23661353) 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, 3943573 + ... + 3943578.

It is an arithmetic number, because the mean of its divisors is an integer number (7887152).

Almost surely, 2^23661453 is an apocalyptic number.

It is an amenable number.

23661453 is a deficient number, since it is larger than the sum of its proper divisors (7887155).

23661453 is an equidigital number, since it uses as much as digits as its factorization.

23661453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887154.

The product of its digits is 12960, while the sum is 30.

The square root of 23661453 is about 4864.3039584302. The cubic root of 23661453 is about 287.0871826983.

The spelling of 23661453 in words is "twenty-three million, six hundred sixty-one thousand, four hundred fifty-three".