23145859 has 4 divisors (see below), whose sum is σ = 25250040. Its totient is φ = 21041680.

The previous prime is 23145827. The next prime is 23145883. The reversal of 23145859 is 95854132.

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

It is not a de Polignac number, because 23145859 - 2⁵ = 23145827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23145359) 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 3 ways as a sum of consecutive naturals, for example, 1052074 + ... + 1052095.

It is an arithmetic number, because the mean of its divisors is an integer number (6312510).

Almost surely, 2^23145859 is an apocalyptic number.

23145859 is a deficient number, since it is larger than the sum of its proper divisors (2104181).

23145859 is a wasteful number, since it uses less digits than its factorization.

23145859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104180.

The product of its digits is 43200, while the sum is 37.

The square root of 23145859 is about 4811.0143421112. The cubic root of 23145859 is about 284.9865962712.

The spelling of 23145859 in words is "twenty-three million, one hundred forty-five thousand, eight hundred fifty-nine".