23112555 has 16 divisors (see below), whose sum is σ = 37040640. Its totient is φ = 12306528.

The previous prime is 23112553. The next prime is 23112563. The reversal of 23112555 is 55521132.

It is a happy number.

It is not a de Polignac number, because 23112555 - 2¹ = 23112553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23112553) 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 15 ways as a sum of consecutive naturals, for example, 14844 + ... + 16326.

It is an arithmetic number, because the mean of its divisors is an integer number (2315040).

Almost surely, 2^23112555 is an apocalyptic number.

23112555 is a deficient number, since it is larger than the sum of its proper divisors (13928085).

23112555 is a wasteful number, since it uses less digits than its factorization.

23112555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530.

The product of its digits is 1500, while the sum is 24.

The square root of 23112555 is about 4807.5518717950. The cubic root of 23112555 is about 284.8498439554.

Adding to 23112555 its reverse (55521132), we get a palindrome (78633687).

The spelling of 23112555 in words is "twenty-three million, one hundred twelve thousand, five hundred fifty-five".