2172117 has 8 divisors (see below), whose sum is σ = 2908224. Its totient is φ = 1442048.

The previous prime is 2172113. The next prime is 2172151. The reversal of 2172117 is 7112712.

It is a happy number.

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 2172117 - 2² = 2172113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2172093 and 2172102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172113) 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, 588 + ... + 2165.

It is an arithmetic number, because the mean of its divisors is an integer number (363528).

2^2172117 is an apocalyptic number.

It is an amenable number.

2172117 is a deficient number, since it is larger than the sum of its proper divisors (736107).

2172117 is a wasteful number, since it uses less digits than its factorization.

2172117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its digits is 196, while the sum is 21.

The square root of 2172117 is about 1473.8103677204. The cubic root of 2172117 is about 129.5073464226.

Adding to 2172117 its reverse (7112712), we get a palindrome (9284829).

The spelling of 2172117 in words is "two million, one hundred seventy-two thousand, one hundred seventeen".