1081089 has 6 divisors (see below), whose sum is σ = 1561586. Its totient is φ = 720720.

The previous prime is 1081079. The next prime is 1081097. The reversal of 1081089 is 9801801.

It can be written as a sum of positive squares in only one way, i.e., 1016064 + 65025 = 1008^2 + 255^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1081089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60052 + ... + 60069.

2^1081089 is an apocalyptic number.

It is an amenable number.

1081089 is a deficient number, since it is larger than the sum of its proper divisors (480497).

1081089 is a wasteful number, since it uses less digits than its factorization.

1081089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120127 (or 120124 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1081089 is about 1039.7542978993. The cubic root of 1081089 is about 102.6330297314.

The spelling of 1081089 in words is "one million, eighty-one thousand, eighty-nine".