2172271 has 8 divisors (see below), whose sum is σ = 2232000. Its totient is φ = 2113440.

The previous prime is 2172257. The next prime is 2172283. The reversal of 2172271 is 1722712.

2172271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2172271 - 2⁵ = 2172239 is a prime.

It is a super-2 number, since 2×2172271² = 9437522594882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8970 + ... + 9208.

It is an arithmetic number, because the mean of its divisors is an integer number (279000).

2^2172271 is an apocalyptic number.

2172271 is a deficient number, since it is larger than the sum of its proper divisors (59729).

2172271 is a wasteful number, since it uses less digits than its factorization.

2172271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449.

The product of its digits is 392, while the sum is 22.

The square root of 2172271 is about 1473.8626123218. The cubic root of 2172271 is about 129.5104069791.

Adding to 2172271 its reverse (1722712), we get a palindrome (3894983).

The spelling of 2172271 in words is "two million, one hundred seventy-two thousand, two hundred seventy-one".