23505513 has 8 divisors (see below), whose sum is σ = 31373088. Its totient is φ = 15654144.

The previous prime is 23505497. The next prime is 23505539. The reversal of 23505513 is 31550532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23505513 - 2⁴ = 23505497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23505583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120 + ... + 6857.

It is an arithmetic number, because the mean of its divisors is an integer number (3921636).

Almost surely, 2^23505513 is an apocalyptic number.

It is an amenable number.

23505513 is a deficient number, since it is larger than the sum of its proper divisors (7867575).

23505513 is a wasteful number, since it uses less digits than its factorization.

23505513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 23505513 is about 4848.2484466042. The cubic root of 23505513 is about 286.4551126799.

The spelling of 23505513 in words is "twenty-three million, five hundred five thousand, five hundred thirteen".