23165505 has 48 divisors (see below), whose sum is σ = 44680896. Its totient is φ = 11007360.

The previous prime is 23165491. The next prime is 23165521. The reversal of 23165505 is 50556132.

23165505 is a `hidden beast` number, since 2 + 3 + 1 + 655 + 0 + 5 = 666.

It is not a de Polignac number, because 23165505 - 2⁷ = 23165377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25794 + ... + 26676.

It is an arithmetic number, because the mean of its divisors is an integer number (930852).

Almost surely, 2^23165505 is an apocalyptic number.

It is an amenable number.

23165505 is a deficient number, since it is larger than the sum of its proper divisors (21515391).

23165505 is a wasteful number, since it uses less digits than its factorization.

23165505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 23165505 is about 4813.0556822044. The cubic root of 23165505 is about 285.0672048347.

The spelling of 23165505 in words is "twenty-three million, one hundred sixty-five thousand, five hundred five".