23243553 has 12 divisors (see below), whose sum is σ = 33801300. Its totient is φ = 15390816.

The previous prime is 23243543. The next prime is 23243599. The reversal of 23243553 is 35534232.

It can be written as a sum of positive squares in 2 ways, for example, as 1871424 + 21372129 = 1368^2 + 4623^2 .

It is not a de Polignac number, because 23243553 - 2⁶ = 23243489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23243543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7326 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (2816775).

Almost surely, 2^23243553 is an apocalyptic number.

It is an amenable number.

23243553 is a deficient number, since it is larger than the sum of its proper divisors (10557747).

23243553 is a wasteful number, since it uses less digits than its factorization.

23243553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17488 (or 17485 counting only the distinct ones).

The product of its digits is 10800, while the sum is 27.

The square root of 23243553 is about 4821.1568113887. The cubic root of 23243553 is about 285.3869904417.

Adding to 23243553 its reverse (35534232), we get a palindrome (58777785).

The spelling of 23243553 in words is "twenty-three million, two hundred forty-three thousand, five hundred fifty-three".