2081197 has 4 divisors (see below), whose sum is σ = 2097216. Its totient is φ = 2065180.

The previous prime is 2081171. The next prime is 2081237. The reversal of 2081197 is 7911802.

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 2081197 - 2¹¹ = 2079149 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 (2081147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7813 + ... + 8074.

It is an arithmetic number, because the mean of its divisors is an integer number (524304).

2^2081197 is an apocalyptic number.

It is an amenable number.

2081197 is a deficient number, since it is larger than the sum of its proper divisors (16019).

2081197 is a wasteful number, since it uses less digits than its factorization.

2081197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16018.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 2081197 is about 1442.6354355831. The cubic root of 2081197 is about 127.6745680047.

Adding to 2081197 its reverse (7911802), we get a palindrome (9992999).

It can be divided in two parts, 2081 and 197, that added together give a triangular number (2278 = T₆₇).

The spelling of 2081197 in words is "two million, eighty-one thousand, one hundred ninety-seven".