2165415 has 32 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 963840.

The previous prime is 2165413. The next prime is 2165453. The reversal of 2165415 is 5145612.

It is not a de Polignac number, because 2165415 - 2¹ = 2165413 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4054 + ... + 4556.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^2165415 is an apocalyptic number.

2165415 is a deficient number, since it is larger than the sum of its proper divisors (1898841).

2165415 is a wasteful number, since it uses less digits than its factorization.

2165415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559.

The product of its digits is 1200, while the sum is 24.

The square root of 2165415 is about 1471.5349129395. The cubic root of 2165415 is about 129.3740122214.

The spelling of 2165415 in words is "two million, one hundred sixty-five thousand, four hundred fifteen".