2102245 has 8 divisors (see below), whose sum is σ = 2570616. Its totient is φ = 1649856.

The previous prime is 2102213. The next prime is 2102249. The reversal of 2102245 is 5422012.

It can be written as a sum of positive squares in 4 ways, for example, as 214369 + 1887876 = 463^2 + 1374^2 .

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 2102245 - 2⁵ = 2102213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102249) 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, 3702 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (321327).

2^2102245 is an apocalyptic number.

It is an amenable number.

2102245 is a deficient number, since it is larger than the sum of its proper divisors (468371).

2102245 is an equidigital number, since it uses as much as digits as its factorization.

2102245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2102245 is about 1449.9120662992. The cubic root of 2102245 is about 128.1035335839.

Adding to 2102245 its reverse (5422012), we get a palindrome (7524257).

The spelling of 2102245 in words is "two million, one hundred two thousand, two hundred forty-five".