2971091 has 4 divisors (see below), whose sum is σ = 2985384. Its totient is φ = 2956800.

The previous prime is 2971081. The next prime is 2971093. The reversal of 2971091 is 1901792.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2971091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2971093) 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, 6830 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (746346).

2^2971091 is an apocalyptic number.

2971091 is a deficient number, since it is larger than the sum of its proper divisors (14293).

2971091 is a wasteful number, since it uses less digits than its factorization.

2971091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14292.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 2971091 is about 1723.6852961025. The cubic root of 2971091 is about 143.7601943621.

The spelling of 2971091 in words is "two million, nine hundred seventy-one thousand, ninety-one".