2321855 has 4 divisors (see below), whose sum is σ = 2786232. Its totient is φ = 1857480.

The previous prime is 2321821. The next prime is 2321863. The reversal of 2321855 is 5581232.

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

It is not a de Polignac number, because 2321855 - 2⁶ = 2321791 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, 232181 + ... + 232190.

It is an arithmetic number, because the mean of its divisors is an integer number (696558).

2^2321855 is an apocalyptic number.

2321855 is a deficient number, since it is larger than the sum of its proper divisors (464377).

2321855 is an equidigital number, since it uses as much as digits as its factorization.

2321855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464376.

The product of its digits is 2400, while the sum is 26.

The square root of 2321855 is about 1523.7634330827. The cubic root of 2321855 is about 132.4173924390.

The spelling of 2321855 in words is "two million, three hundred twenty-one thousand, eight hundred fifty-five".