2171273 has 4 divisors (see below), whose sum is σ = 2338308. Its totient is φ = 2004240.

The previous prime is 2171261. The next prime is 2171293. The reversal of 2171273 is 3721712.

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 394384 + 1776889 = 628^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 2171273 - 2⁸ = 2171017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83498 + ... + 83523.

It is an arithmetic number, because the mean of its divisors is an integer number (584577).

2^2171273 is an apocalyptic number.

It is an amenable number.

2171273 is a deficient number, since it is larger than the sum of its proper divisors (167035).

2171273 is a wasteful number, since it uses less digits than its factorization.

2171273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167034.

The product of its digits is 588, while the sum is 23.

The square root of 2171273 is about 1473.5240072696. The cubic root of 2171273 is about 129.4905704140.

Adding to 2171273 its reverse (3721712), we get a palindrome (5892985).

The spelling of 2171273 in words is "two million, one hundred seventy-one thousand, two hundred seventy-three".