23485591 has 4 divisors (see below), whose sum is σ = 23607472. Its totient is φ = 23363712.

The previous prime is 23485589. The next prime is 23485607. The reversal of 23485591 is 19558432.

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

It is a cyclic number.

It is not a de Polignac number, because 23485591 - 2¹ = 23485589 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 23485591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23485531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60651 + ... + 61036.

It is an arithmetic number, because the mean of its divisors is an integer number (5901868).

Almost surely, 2^23485591 is an apocalyptic number.

23485591 is a deficient number, since it is larger than the sum of its proper divisors (121881).

23485591 is a wasteful number, since it uses less digits than its factorization.

23485591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121880.

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

The square root of 23485591 is about 4846.1934546611. The cubic root of 23485591 is about 286.3741618584.

The spelling of 23485591 in words is "twenty-three million, four hundred eighty-five thousand, five hundred ninety-one".