23555143 has 4 divisors (see below), whose sum is σ = 23565168. Its totient is φ = 23545120.

The previous prime is 23555137. The next prime is 23555167. The reversal of 23555143 is 34155532.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23555143 - 2⁵ = 23555111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23555113) 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, 630 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (5891292).

Almost surely, 2^23555143 is an apocalyptic number.

23555143 is a deficient number, since it is larger than the sum of its proper divisors (10025).

23555143 is an equidigital number, since it uses as much as digits as its factorization.

23555143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10024.

The product of its digits is 9000, while the sum is 28.

The square root of 23555143 is about 4853.3640910198. The cubic root of 23555143 is about 286.6565799287.

The spelling of 23555143 in words is "twenty-three million, five hundred fifty-five thousand, one hundred forty-three".