2175229 has 4 divisors (see below), whose sum is σ = 2485984. Its totient is φ = 1864476.

The previous prime is 2175223. The next prime is 2175233. The reversal of 2175229 is 9225712.

2175229 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 2175229 - 2⁵ = 2175197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2175197 and 2175206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2175223) 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, 155367 + ... + 155380.

It is an arithmetic number, because the mean of its divisors is an integer number (621496).

2^2175229 is an apocalyptic number.

It is an amenable number.

2175229 is a deficient number, since it is larger than the sum of its proper divisors (310755).

2175229 is an equidigital number, since it uses as much as digits as its factorization.

2175229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310754.

The product of its digits is 2520, while the sum is 28.

The square root of 2175229 is about 1474.8657566030. The cubic root of 2175229 is about 129.5691654595.

The spelling of 2175229 in words is "two million, one hundred seventy-five thousand, two hundred twenty-nine".