2273145 has 16 divisors (see below), whose sum is σ = 4156800. Its totient is φ = 1039104.

The previous prime is 2273143. The next prime is 2273153. The reversal of 2273145 is 5413722.

It is not a de Polignac number, because 2273145 - 2¹ = 2273143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2273143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10720 + ... + 10929.

It is an arithmetic number, because the mean of its divisors is an integer number (259800).

2^2273145 is an apocalyptic number.

It is an amenable number.

2273145 is a deficient number, since it is larger than the sum of its proper divisors (1883655).

2273145 is a wasteful number, since it uses less digits than its factorization.

2273145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21664.

The product of its digits is 1680, while the sum is 24.

The square root of 2273145 is about 1507.6952609861. The cubic root of 2273145 is about 131.4848493680.

Adding to 2273145 its reverse (5413722), we get a palindrome (7686867).

The spelling of 2273145 in words is "two million, two hundred seventy-three thousand, one hundred forty-five".