2164045 has 16 divisors (see below), whose sum is σ = 2827440. Its totient is φ = 1589952.

The previous prime is 2164039. The next prime is 2164073. The reversal of 2164045 is 5404612.

It can be written as a sum of positive squares in 8 ways, for example, as 958441 + 1205604 = 979^2 + 1098^2 .

It is not a de Polignac number, because 2164045 - 2³ = 2164037 is a prime.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10887 + ... + 11083.

It is an arithmetic number, because the mean of its divisors is an integer number (176715).

2^2164045 is an apocalyptic number.

It is an amenable number.

2164045 is a deficient number, since it is larger than the sum of its proper divisors (663395).

2164045 is an equidigital number, since it uses as much as digits as its factorization.

2164045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2164045 is about 1471.0693389504. The cubic root of 2164045 is about 129.3467226428.

Adding to 2164045 its reverse (5404612), we get a palindrome (7568657).

The spelling of 2164045 in words is "two million, one hundred sixty-four thousand, forty-five".