2161315 has 16 divisors (see below), whose sum is σ = 2864736. Its totient is φ = 1555200.

The previous prime is 2161303. The next prime is 2161319. The reversal of 2161315 is 5131612.

2161315 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 2161315 - 2¹⁵ = 2128547 is a prime.

It is a Duffinian number.

2161315 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2161292 and 2161301.

It is not an unprimeable number, because it can be changed into a prime (2161319) 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 15 ways as a sum of consecutive naturals, for example, 2260 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (179046).

2^2161315 is an apocalyptic number.

2161315 is a deficient number, since it is larger than the sum of its proper divisors (703421).

2161315 is a wasteful number, since it uses less digits than its factorization.

2161315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870.

The product of its digits is 180, while the sum is 19.

The square root of 2161315 is about 1470.1411496860. The cubic root of 2161315 is about 129.2923083175.

Adding to 2161315 its reverse (5131612), we get a palindrome (7292927).

The spelling of 2161315 in words is "two million, one hundred sixty-one thousand, three hundred fifteen".