2167145 has 4 divisors (see below), whose sum is σ = 2600580. Its totient is φ = 1733712.

The previous prime is 2167111. The next prime is 2167163. The reversal of 2167145 is 5417612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 1413721 = 868^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167145 - 2¹⁰ = 2166121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216710 + ... + 216719.

It is an arithmetic number, because the mean of its divisors is an integer number (650145).

2^2167145 is an apocalyptic number.

It is an amenable number.

2167145 is a deficient number, since it is larger than the sum of its proper divisors (433435).

2167145 is an equidigital number, since it uses as much as digits as its factorization.

2167145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433434.

The product of its digits is 1680, while the sum is 26.

The square root of 2167145 is about 1472.1226171756. The cubic root of 2167145 is about 129.4084563447.

The spelling of 2167145 in words is "two million, one hundred sixty-seven thousand, one hundred forty-five".