7081091 has 4 divisors (see below), whose sum is σ = 7453800. Its totient is φ = 6708384.

The previous prime is 7081049. The next prime is 7081093. The reversal of 7081091 is 1901807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1901807 = 17 ⋅111871.

It is a cyclic number.

It is not a de Polignac number, because 7081091 - 2¹⁸ = 6818947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7081091.

It is not an unprimeable number, because it can be changed into a prime (7081093) 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, 186326 + ... + 186363.

It is an arithmetic number, because the mean of its divisors is an integer number (1863450).

Almost surely, 2^7081091 is an apocalyptic number.

7081091 is a deficient number, since it is larger than the sum of its proper divisors (372709).

7081091 is a wasteful number, since it uses less digits than its factorization.

7081091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372708.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 7081091 is about 2661.0319426869. The cubic root of 7081091 is about 192.0289579442.

Adding to 7081091 its reverse (1901807), we get a palindrome (8982898).

The spelling of 7081091 in words is "seven million, eighty-one thousand, ninety-one".