23445513 has 24 divisors (see below), whose sum is σ = 41682368. Its totient is φ = 12366432.

The previous prime is 23445509. The next prime is 23445553. The reversal of 23445513 is 31554432.

It is not a de Polignac number, because 23445513 - 2² = 23445509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23445553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13495 + ... + 15132.

Almost surely, 2^23445513 is an apocalyptic number.

It is an amenable number.

23445513 is a deficient number, since it is larger than the sum of its proper divisors (18236855).

23445513 is a wasteful number, since it uses less digits than its factorization.

23445513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28653 (or 28650 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 23445513 is about 4842.0566911179. The cubic root of 23445513 is about 286.2111705942.

Adding to 23445513 its reverse (31554432), we get a palindrome (54999945).

The spelling of 23445513 in words is "twenty-three million, four hundred forty-five thousand, five hundred thirteen".