23205505 has 8 divisors (see below), whose sum is σ = 29057472. Its totient is φ = 17757168.

The previous prime is 23205503. The next prime is 23205521. The reversal of 23205505 is 50550232.

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

It is a cyclic number.

It is not a de Polignac number, because 23205505 - 2¹ = 23205503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23205503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100779 + ... + 101008.

It is an arithmetic number, because the mean of its divisors is an integer number (3632184).

Almost surely, 2^23205505 is an apocalyptic number.

It is an amenable number.

23205505 is a deficient number, since it is larger than the sum of its proper divisors (5851967).

23205505 is a wasteful number, since it uses less digits than its factorization.

23205505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201815.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 23205505 is about 4817.2092543297. The cubic root of 23205505 is about 285.2311861718.

Adding to 23205505 its reverse (50550232), we get a palindrome (73755737).

The spelling of 23205505 in words is "twenty-three million, two hundred five thousand, five hundred five".