2152172 has 24 divisors (see below), whose sum is σ = 4212432. Its totient is φ = 953600.

The previous prime is 2152169. The next prime is 2152201. The reversal of 2152172 is 2712512.

2152172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 1208 + ... + 2400.

It is an arithmetic number, because the mean of its divisors is an integer number (175518).

2^2152172 is an apocalyptic number.

2152172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2152172 is a deficient number, since it is larger than the sum of its proper divisors (2060260).

2152172 is a wasteful number, since it uses less digits than its factorization.

2152172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249 (or 1247 counting only the distinct ones).

The product of its digits is 280, while the sum is 20.

The square root of 2152172 is about 1467.0282887525. The cubic root of 2152172 is about 129.1097357620.

Adding to 2152172 its reverse (2712512), we get a palindrome (4864684).

The spelling of 2152172 in words is "two million, one hundred fifty-two thousand, one hundred seventy-two".