23771855 has 4 divisors (see below), whose sum is σ = 28526232. Its totient is φ = 19017480.

The previous prime is 23771843. The next prime is 23771879. The reversal of 23771855 is 55817732.

It is a happy number.

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

It is not a de Polignac number, because 23771855 - 2⁶ = 23771791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2377181 + ... + 2377190.

It is an arithmetic number, because the mean of its divisors is an integer number (7131558).

Almost surely, 2^23771855 is an apocalyptic number.

23771855 is a deficient number, since it is larger than the sum of its proper divisors (4754377).

23771855 is an equidigital number, since it uses as much as digits as its factorization.

23771855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754376.

The product of its digits is 58800, while the sum is 38.

The square root of 23771855 is about 4875.6389324887. The cubic root of 23771855 is about 287.5329968429.

The spelling of 23771855 in words is "twenty-three million, seven hundred seventy-one thousand, eight hundred fifty-five".