2152171 has 8 divisors (see below), whose sum is σ = 2506464. Its totient is φ = 1809600.

The previous prime is 2152169. The next prime is 2152201. The reversal of 2152171 is 1712512.

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 2152171 - 2¹ = 2152169 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152571) 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, 2530 + ... + 3271.

It is an arithmetic number, because the mean of its divisors is an integer number (313308).

2^2152171 is an apocalyptic number.

2152171 is a deficient number, since it is larger than the sum of its proper divisors (354293).

2152171 is an equidigital number, since it uses as much as digits as its factorization.

2152171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861.

The product of its digits is 140, while the sum is 19.

The square root of 2152171 is about 1467.0279479274. The cubic root of 2152171 is about 129.1097157652.

Adding to 2152171 its reverse (1712512), we get a palindrome (3864683).

The spelling of 2152171 in words is "two million, one hundred fifty-two thousand, one hundred seventy-one".