2172417 has 16 divisors (see below), whose sum is σ = 3181248. Its totient is φ = 1310400.

The previous prime is 2172397. The next prime is 2172427. The reversal of 2172417 is 7142712.

It is not a de Polignac number, because 2172417 - 2⁸ = 2172161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1542 + ... + 2592.

It is an arithmetic number, because the mean of its divisors is an integer number (198828).

2^2172417 is an apocalyptic number.

It is an amenable number.

2172417 is a deficient number, since it is larger than the sum of its proper divisors (1008831).

2172417 is a wasteful number, since it uses less digits than its factorization.

2172417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120.

The product of its digits is 784, while the sum is 24.

The square root of 2172417 is about 1473.9121412079. The cubic root of 2172417 is about 129.5133084120.

The spelling of 2172417 in words is "two million, one hundred seventy-two thousand, four hundred seventeen".