2081155 has 8 divisors (see below), whose sum is σ = 2606112. Its totient is φ = 1592448.

The previous prime is 2081147. The next prime is 2081159. The reversal of 2081155 is 5511802.

2081155 = T₂ + T₃ + ... + T₂₃₁.

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

It is a cyclic number.

It is not a de Polignac number, because 2081155 - 2³ = 2081147 is a prime.

It is a super-2 number, since 2×2081155² = 8662412268050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2081159) 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 7 ways as a sum of consecutive naturals, for example, 8934 + ... + 9163.

It is an arithmetic number, because the mean of its divisors is an integer number (325764).

2^2081155 is an apocalyptic number.

2081155 is a deficient number, since it is larger than the sum of its proper divisors (524957).

2081155 is a wasteful number, since it uses less digits than its factorization.

2081155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18125.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2081155 is about 1442.6208788174. The cubic root of 2081155 is about 127.6737091451.

Adding to 2081155 its reverse (5511802), we get a palindrome (7592957).

The spelling of 2081155 in words is "two million, eighty-one thousand, one hundred fifty-five".