2072171 has 4 divisors (see below), whose sum is σ = 2075592. Its totient is φ = 2068752.

The previous prime is 2072153. The next prime is 2072179. The reversal of 2072171 is 1712702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1712702 = 2 ⋅856351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2072171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2072179) 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, 530 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (518898).

2^2072171 is an apocalyptic number.

2072171 is a deficient number, since it is larger than the sum of its proper divisors (3421).

2072171 is an equidigital number, since it uses as much as digits as its factorization.

2072171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 2072171 is about 1439.5037339306. The cubic root of 2072171 is about 127.4897287638.

Adding to 2072171 its reverse (1712702), we get a palindrome (3784873).

The spelling of 2072171 in words is "two million, seventy-two thousand, one hundred seventy-one".