2145223 has 6 divisors (see below), whose sum is σ = 2206176. Its totient is φ = 2085912.

The previous prime is 2145197. The next prime is 2145239. The reversal of 2145223 is 3225412.

It is not a de Polignac number, because 2145223 - 2⁵ = 2145191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2145223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586 + ... + 2152.

It is an arithmetic number, because the mean of its divisors is an integer number (367696).

2^2145223 is an apocalyptic number.

2145223 is a deficient number, since it is larger than the sum of its proper divisors (60953).

2145223 is an equidigital number, since it uses as much as digits as its factorization.

2145223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1604 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 2145223 is about 1464.6579805538. The cubic root of 2145223 is about 128.9706280904.

The spelling of 2145223 in words is "two million, one hundred forty-five thousand, two hundred twenty-three".