23043455 has 4 divisors (see below), whose sum is σ = 27652152. Its totient is φ = 18434760.

The previous prime is 23043443. The next prime is 23043479. The reversal of 23043455 is 55434032.

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

It is not a de Polignac number, because 23043455 - 2⁴ = 23043439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304341 + ... + 2304350.

It is an arithmetic number, because the mean of its divisors is an integer number (6913038).

Almost surely, 2^23043455 is an apocalyptic number.

23043455 is a deficient number, since it is larger than the sum of its proper divisors (4608697).

23043455 is an equidigital number, since it uses as much as digits as its factorization.

23043455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608696.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 23043455 is about 4800.3598823422. The cubic root of 23043455 is about 284.5656871047.

Adding to 23043455 its reverse (55434032), we get a palindrome (78477487).

The spelling of 23043455 in words is "twenty-three million, forty-three thousand, four hundred fifty-five".