2078173 has 4 divisors (see below), whose sum is σ = 2081340. Its totient is φ = 2075008.

The previous prime is 2078161. The next prime is 2078177. The reversal of 2078173 is 3718702.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 702244 + 1375929 = 838^2 + 1173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2078173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (520335).

2^2078173 is an apocalyptic number.

It is an amenable number.

2078173 is a deficient number, since it is larger than the sum of its proper divisors (3167).

2078173 is an equidigital number, since it uses as much as digits as its factorization.

2078173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3166.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 2078173 is about 1441.5869727491. The cubic root of 2078173 is about 127.6127005568.

The spelling of 2078173 in words is "two million, seventy-eight thousand, one hundred seventy-three".