2022145 has 4 divisors (see below), whose sum is σ = 2426580. Its totient is φ = 1617712.

The previous prime is 2022103. The next prime is 2022149. The reversal of 2022145 is 5412202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412202 = 2 ⋅2706101.

It can be written as a sum of positive squares in 2 ways, for example, as 998001 + 1024144 = 999^2 + 1012^2 .

It is a cyclic number.

It is not a de Polignac number, because 2022145 - 2⁷ = 2022017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2022149) 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 3 ways as a sum of consecutive naturals, for example, 202210 + ... + 202219.

It is an arithmetic number, because the mean of its divisors is an integer number (606645).

2^2022145 is an apocalyptic number.

It is an amenable number.

2022145 is a deficient number, since it is larger than the sum of its proper divisors (404435).

2022145 is an equidigital number, since it uses as much as digits as its factorization.

2022145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404434.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2022145 is about 1422.0214485021. The cubic root of 2022145 is about 126.4554150346.

Adding to 2022145 its reverse (5412202), we get a palindrome (7434347).

The spelling of 2022145 in words is "two million, twenty-two thousand, one hundred forty-five".