2002155 has 16 divisors (see below), whose sum is σ = 3231744. Its totient is φ = 1058400.

The previous prime is 2002151. The next prime is 2002157. The reversal of 2002155 is 5512002.

It is not a de Polignac number, because 2002155 - 2² = 2002151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (2002151) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1380 + ... + 2430.

It is an arithmetic number, because the mean of its divisors is an integer number (201984).

2^2002155 is an apocalyptic number.

2002155 is a deficient number, since it is larger than the sum of its proper divisors (1229589).

2002155 is a wasteful number, since it uses less digits than its factorization.

2002155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2002155 is about 1414.9752648015. The cubic root of 2002155 is about 126.0373409105.

Adding to 2002155 its reverse (5512002), we get a palindrome (7514157).

The spelling of 2002155 in words is "two million, two thousand, one hundred fifty-five".