2061191 has 8 divisors (see below), whose sum is σ = 2346624. Its totient is φ = 1792120.

The previous prime is 2061187. The next prime is 2061197. The reversal of 2061191 is 1911602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2061191 - 2² = 2061187 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 (2061197) 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, 3821 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (293328).

2^2061191 is an apocalyptic number.

2061191 is a deficient number, since it is larger than the sum of its proper divisors (285433).

2061191 is a wasteful number, since it uses less digits than its factorization.

2061191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 2061191 is about 1435.6848539983. The cubic root of 2061191 is about 127.2641494064.

Adding to 2061191 its reverse (1911602), we get a palindrome (3972793).

It can be divided in two parts, 20611 and 91, that added together give a palindrome (20702).

The spelling of 2061191 in words is "two million, sixty-one thousand, one hundred ninety-one".