23553385 has 4 divisors (see below), whose sum is σ = 28264068. Its totient is φ = 18842704.

The previous prime is 23553353. The next prime is 23553401. The reversal of 23553385 is 58335532.

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 10361961 + 13191424 = 3219^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 23553385 - 2⁵ = 23553353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23553385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355334 + ... + 2355343.

It is an arithmetic number, because the mean of its divisors is an integer number (7066017).

Almost surely, 2^23553385 is an apocalyptic number.

It is an amenable number.

23553385 is a deficient number, since it is larger than the sum of its proper divisors (4710683).

23553385 is an equidigital number, since it uses as much as digits as its factorization.

23553385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4710682.

The product of its digits is 54000, while the sum is 34.

The square root of 23553385 is about 4853.1829761508. The cubic root of 23553385 is about 286.6494483679.

The spelling of 23553385 in words is "twenty-three million, five hundred fifty-three thousand, three hundred eighty-five".