2180217 has 8 divisors (see below), whose sum is σ = 3130624. Its totient is φ = 1341648.

The previous prime is 2180183. The next prime is 2180219. The reversal of 2180217 is 7120812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2180217 - 2⁷ = 2180089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2180193 and 2180202.

It is not an unprimeable number, because it can be changed into a prime (2180219) 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, 27913 + ... + 27990.

It is an arithmetic number, because the mean of its divisors is an integer number (391328).

2^2180217 is an apocalyptic number.

It is an amenable number.

2180217 is a deficient number, since it is larger than the sum of its proper divisors (950407).

2180217 is a wasteful number, since it uses less digits than its factorization.

2180217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55919.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 2180217 is about 1476.5557896673. Note that the first 3 decimals coincide. The cubic root of 2180217 is about 129.6681278559.

The spelling of 2180217 in words is "two million, one hundred eighty thousand, two hundred seventeen".