23557085 has 4 divisors (see below), whose sum is σ = 28268508. Its totient is φ = 18845664.

The previous prime is 23557081. The next prime is 23557099. The reversal of 23557085 is 58075532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8826841 + 14730244 = 2971^2 + 3838^2 .

It is a cyclic number.

It is not a de Polignac number, because 23557085 - 2² = 23557081 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 (23557081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355704 + ... + 2355713.

It is an arithmetic number, because the mean of its divisors is an integer number (7067127).

Almost surely, 2^23557085 is an apocalyptic number.

It is an amenable number.

23557085 is a deficient number, since it is larger than the sum of its proper divisors (4711423).

23557085 is an equidigital number, since it uses as much as digits as its factorization.

23557085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711422.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 23557085 is about 4853.5641543097. The cubic root of 23557085 is about 286.6644574975.

The spelling of 23557085 in words is "twenty-three million, five hundred fifty-seven thousand, eighty-five".