2152855 has 4 divisors (see below), whose sum is σ = 2583432. Its totient is φ = 1722280.

The previous prime is 2152849. The next prime is 2152861. The reversal of 2152855 is 5582512.

2152855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (2152849) and next prime (2152861).

It is not a de Polignac number, because 2152855 - 2³ = 2152847 is a prime.

It is an Ulam number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215281 + ... + 215290.

It is an arithmetic number, because the mean of its divisors is an integer number (645858).

2^2152855 is an apocalyptic number.

2152855 is a deficient number, since it is larger than the sum of its proper divisors (430577).

2152855 is an equidigital number, since it uses as much as digits as its factorization.

2152855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430576.

The product of its digits is 4000, while the sum is 28.

The square root of 2152855 is about 1467.2610538006. The cubic root of 2152855 is about 129.1233921400.

The spelling of 2152855 in words is "two million, one hundred fifty-two thousand, eight hundred fifty-five".