1083581 has 4 divisors (see below), whose sum is σ = 1085664. Its totient is φ = 1081500.

The previous prime is 1083571. The next prime is 1083583. The reversal of 1083581 is 1853801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1083581 - 2⁶ = 1083517 is a prime.

It is a super-2 number, since 2×1083581² = 2348295567122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1083581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083583) 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, 506 + ... + 1556.

It is an arithmetic number, because the mean of its divisors is an integer number (271416).

2^1083581 is an apocalyptic number.

It is an amenable number.

1083581 is a deficient number, since it is larger than the sum of its proper divisors (2083).

1083581 is a wasteful number, since it uses less digits than its factorization.

1083581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1083581 is about 1040.9519681522. The cubic root of 1083581 is about 102.7118284378.

The spelling of 1083581 in words is "one million, eighty-three thousand, five hundred eighty-one".