2091011 has 8 divisors (see below), whose sum is σ = 2264640. Its totient is φ = 1919232.

The previous prime is 2090989. The next prime is 2091053. The reversal of 2091011 is 1101902.

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 2091011 - 2¹⁸ = 1828867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091211) 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 7 ways as a sum of consecutive naturals, for example, 2771 + ... + 3443.

It is an arithmetic number, because the mean of its divisors is an integer number (283080).

2^2091011 is an apocalyptic number.

2091011 is a deficient number, since it is larger than the sum of its proper divisors (173629).

2091011 is a wasteful number, since it uses less digits than its factorization.

2091011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2091011 is about 1446.0328488662. The cubic root of 2091011 is about 127.8749388852.

Adding to 2091011 its reverse (1101902), we get a palindrome (3192913).

The spelling of 2091011 in words is "two million, ninety-one thousand, eleven".