23553983 has 4 divisors (see below), whose sum is σ = 23566128. Its totient is φ = 23541840.

The previous prime is 23553979. The next prime is 23553997. The reversal of 23553983 is 38935532.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23553983 - 2² = 23553979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23553953) 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, 2438 + ... + 7283.

It is an arithmetic number, because the mean of its divisors is an integer number (5891532).

Almost surely, 2^23553983 is an apocalyptic number.

23553983 is a deficient number, since it is larger than the sum of its proper divisors (12145).

23553983 is an equidigital number, since it uses as much as digits as its factorization.

23553983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144.

The product of its digits is 97200, while the sum is 38.

The square root of 23553983 is about 4853.2445848113. The cubic root of 23553983 is about 286.6518742743.

The spelling of 23553983 in words is "twenty-three million, five hundred fifty-three thousand, nine hundred eighty-three".