2173085 has 8 divisors (see below), whose sum is σ = 2615640. Its totient is φ = 1733184.

The previous prime is 2173081. The next prime is 2173099. The reversal of 2173085 is 5803712.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 2042041 = 362^2 + 1429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2173085 - 2² = 2173081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2711 + ... + 3419.

It is an arithmetic number, because the mean of its divisors is an integer number (326955).

2^2173085 is an apocalyptic number.

It is an amenable number.

2173085 is a deficient number, since it is larger than the sum of its proper divisors (442555).

2173085 is an equidigital number, since it uses as much as digits as its factorization.

2173085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327.

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

The square root of 2173085 is about 1474.1387315989. The cubic root of 2173085 is about 129.5265818035.

Adding to 2173085 its reverse (5803712), we get a palindrome (7976797).

The spelling of 2173085 in words is "two million, one hundred seventy-three thousand, eighty-five".