23541985 has 4 divisors (see below), whose sum is σ = 28250388. Its totient is φ = 18833584.

The previous prime is 23541983. The next prime is 23542009. The reversal of 23541985 is 58914532.

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 8433216 + 15108769 = 2904^2 + 3887^2 .

It is a cyclic number.

It is not a de Polignac number, because 23541985 - 2¹ = 23541983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23541983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354194 + ... + 2354203.

It is an arithmetic number, because the mean of its divisors is an integer number (7062597).

Almost surely, 2^23541985 is an apocalyptic number.

It is an amenable number.

23541985 is a deficient number, since it is larger than the sum of its proper divisors (4708403).

23541985 is an equidigital number, since it uses as much as digits as its factorization.

23541985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708402.

The product of its digits is 43200, while the sum is 37.

The square root of 23541985 is about 4852.0083470662. The cubic root of 23541985 is about 286.6031941378.

The spelling of 23541985 in words is "twenty-three million, five hundred forty-one thousand, nine hundred eighty-five".