2161115 has 8 divisors (see below), whose sum is σ = 2829168. Its totient is φ = 1571680.

The previous prime is 2161087. The next prime is 2161121. The reversal of 2161115 is 5111612.

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

It is not a de Polignac number, because 2161115 - 2¹⁴ = 2144731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2161093 and 2161102.

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, 19592 + ... + 19701.

It is an arithmetic number, because the mean of its divisors is an integer number (353646).

2^2161115 is an apocalyptic number.

2161115 is a deficient number, since it is larger than the sum of its proper divisors (668053).

2161115 is a wasteful number, since it uses less digits than its factorization.

2161115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39309.

The product of its digits is 60, while the sum is 17.

The square root of 2161115 is about 1470.0731274328. The cubic root of 2161115 is about 129.2883201191.

Adding to 2161115 its reverse (5111612), we get a palindrome (7272727).

It can be divided in two parts, 216 and 1115, that added together give a palindrome (1331).

The spelling of 2161115 in words is "two million, one hundred sixty-one thousand, one hundred fifteen".