2164245 has 16 divisors (see below), whose sum is σ = 3488640. Its totient is φ = 1145664.

The previous prime is 2164229. The next prime is 2164247. The reversal of 2164245 is 5424612.

It is not a de Polignac number, because 2164245 - 2⁴ = 2164229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1896 + ... + 2814.

It is an arithmetic number, because the mean of its divisors is an integer number (218040).

2^2164245 is an apocalyptic number.

It is an amenable number.

2164245 is a deficient number, since it is larger than the sum of its proper divisors (1324395).

2164245 is a wasteful number, since it uses less digits than its factorization.

2164245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its digits is 1920, while the sum is 24.

The square root of 2164245 is about 1471.1373151409. The cubic root of 2164245 is about 129.3507072407.

Adding to 2164245 its reverse (5424612), we get a palindrome (7588857).

The spelling of 2164245 in words is "two million, one hundred sixty-four thousand, two hundred forty-five".