2017091 has 4 divisors (see below), whose sum is σ = 2020872. Its totient is φ = 2013312.

The previous prime is 2017079. The next prime is 2017109. The reversal of 2017091 is 1907102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1907102 = 2 ⋅953551.

It is a cyclic number.

It is not a de Polignac number, because 2017091 - 2⁶ = 2017027 is a prime.

It is a super-2 number, since 2×2017091² = 8137312204562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2017991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926 + ... + 2211.

It is an arithmetic number, because the mean of its divisors is an integer number (505218).

2^2017091 is an apocalyptic number.

2017091 is a deficient number, since it is larger than the sum of its proper divisors (3781).

2017091 is an equidigital number, since it uses as much as digits as its factorization.

2017091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 2017091 is about 1420.2432890178. The cubic root of 2017091 is about 126.3499760325.

The spelling of 2017091 in words is "two million, seventeen thousand, ninety-one".