2971155 has 24 divisors (see below), whose sum is σ = 5228496. Its totient is φ = 1439680.

The previous prime is 2971139. The next prime is 2971159. The reversal of 2971155 is 5511792.

2971155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2971155 - 2⁴ = 2971139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2971159) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 997 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (217854).

2^2971155 is an apocalyptic number.

2971155 is a deficient number, since it is larger than the sum of its proper divisors (2257341).

2971155 is a wasteful number, since it uses less digits than its factorization.

2971155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1656 counting only the distinct ones).

The product of its digits is 3150, while the sum is 30.

The square root of 2971155 is about 1723.7038608763. The cubic root of 2971155 is about 143.7612265964.

The spelling of 2971155 in words is "two million, nine hundred seventy-one thousand, one hundred fifty-five".