1080091 has 2 divisors, whose sum is σ = 1080092. Its totient is φ = 1080090.

The previous prime is 1080089. The next prime is 1080097. The reversal of 1080091 is 1900801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1080091 - 2¹ = 1080089 is a prime.

Together with 1080089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1080097) 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 as a sum of consecutive naturals, namely, 540045 + 540046.

It is an arithmetic number, because the mean of its divisors is an integer number (540046).

2^1080091 is an apocalyptic number.

1080091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080091 is an equidigital number, since it uses as much as digits as its factorization.

1080091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1080091 is about 1039.2742660145. The cubic root of 1080091 is about 102.6014383458.

Adding to 1080091 its reverse (1900801), we get a palindrome (2980892).

The spelling of 1080091 in words is "one million, eighty thousand, ninety-one".