2148217 has 4 divisors (see below), whose sum is σ = 2156416. Its totient is φ = 2140020.

The previous prime is 2148203. The next prime is 2148227. The reversal of 2148217 is 7128412.

It is a happy number.

2148217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2148217 - 2¹¹ = 2146169 is a prime.

It is a super-2 number, since 2×2148217² = 9229672558178, which contains 22 as substring.

It is a Duffinian number.

2148217 is a lucky number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2148191 and 2148200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3693 + ... + 4234.

It is an arithmetic number, because the mean of its divisors is an integer number (539104).

2^2148217 is an apocalyptic number.

It is an amenable number.

2148217 is a deficient number, since it is larger than the sum of its proper divisors (8199).

2148217 is an equidigital number, since it uses as much as digits as its factorization.

2148217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8198.

The product of its digits is 896, while the sum is 25.

The square root of 2148217 is about 1465.6797058021. The cubic root of 2148217 is about 129.0305998759.

The spelling of 2148217 in words is "two million, one hundred forty-eight thousand, two hundred seventeen".