2173045 has 16 divisors (see below), whose sum is σ = 3045888. Its totient is φ = 1457280.

The previous prime is 2173043. The next prime is 2173051. The reversal of 2173045 is 5403712.

It is not a de Polignac number, because 2173045 - 2¹ = 2173043 is a prime.

It is a Duffinian number.

2173045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 985 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (190368).

2^2173045 is an apocalyptic number.

It is an amenable number.

2173045 is a deficient number, since it is larger than the sum of its proper divisors (872843).

2173045 is a wasteful number, since it uses less digits than its factorization.

2173045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 2173045 is about 1474.1251642924. The cubic root of 2173045 is about 129.5257870662.

Adding to 2173045 its reverse (5403712), we get a palindrome (7576757).

The spelling of 2173045 in words is "two million, one hundred seventy-three thousand, forty-five".