2197105 has 4 divisors (see below), whose sum is σ = 2636532. Its totient is φ = 1757680.

The previous prime is 2197087. The next prime is 2197157. The reversal of 2197105 is 5017912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1617984 + 579121 = 1272^2 + 761^2 .

It is not a de Polignac number, because 2197105 - 2⁷ = 2196977 is a prime.

It is a Duffinian number.

2197105 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2197105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219706 + ... + 219715.

It is an arithmetic number, because the mean of its divisors is an integer number (659133).

2^2197105 is an apocalyptic number.

It is an amenable number.

2197105 is a deficient number, since it is larger than the sum of its proper divisors (439427).

2197105 is an equidigital number, since it uses as much as digits as its factorization.

2197105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439426.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2197105 is about 1482.2634718565. The cubic root of 2197105 is about 130.0020709729.

The spelling of 2197105 in words is "two million, one hundred ninety-seven thousand, one hundred five".