2004155 has 8 divisors (see below), whose sum is σ = 2444784. Its totient is φ = 1576800.

The previous prime is 2004137. The next prime is 2004209. The reversal of 2004155 is 5514002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2004155 - 2⁶ = 2004091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2981 + ... + 3590.

It is an arithmetic number, because the mean of its divisors is an integer number (305598).

2^2004155 is an apocalyptic number.

2004155 is a deficient number, since it is larger than the sum of its proper divisors (440629).

2004155 is an equidigital number, since it uses as much as digits as its factorization.

2004155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2004155 is about 1415.6818145332. The cubic root of 2004155 is about 126.0792941715.

Adding to 2004155 its reverse (5514002), we get a palindrome (7518157).

The spelling of 2004155 in words is "two million, four thousand, one hundred fifty-five".