23355561 has 8 divisors (see below), whose sum is σ = 31207680. Its totient is φ = 15536912.

The previous prime is 23355523. The next prime is 23355571. The reversal of 23355561 is 16555332.

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 23355561 - 2⁹ = 23355049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23355571) 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, 6690 + ... + 9563.

It is an arithmetic number, because the mean of its divisors is an integer number (3900960).

Almost surely, 2^23355561 is an apocalyptic number.

It is an amenable number.

23355561 is a deficient number, since it is larger than the sum of its proper divisors (7852119).

23355561 is a wasteful number, since it uses less digits than its factorization.

23355561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735.

The product of its digits is 13500, while the sum is 30.

The square root of 23355561 is about 4832.7591498025. The cubic root of 23355561 is about 285.8446717154.

The spelling of 23355561 in words is "twenty-three million, three hundred fifty-five thousand, five hundred sixty-one".