23505503 has 4 divisors (see below), whose sum is σ = 26863440. Its totient is φ = 20147568.

The previous prime is 23505497. The next prime is 23505539. The reversal of 23505503 is 30550532.

It is a happy number.

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

It is not a de Polignac number, because 23505503 - 2¹⁴ = 23489119 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 (23505583) 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, 1678958 + ... + 1678971.

It is an arithmetic number, because the mean of its divisors is an integer number (6715860).

Almost surely, 2^23505503 is an apocalyptic number.

23505503 is a deficient number, since it is larger than the sum of its proper divisors (3357937).

23505503 is an equidigital number, since it uses as much as digits as its factorization.

23505503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3357936.

The product of its (nonzero) digits is 2250, while the sum is 23.

The square root of 23505503 is about 4848.2474153038. The cubic root of 23505503 is about 286.4550720575.

The spelling of 23505503 in words is "twenty-three million, five hundred five thousand, five hundred three".