1083561 has 8 divisors (see below), whose sum is σ = 1450080. Its totient is φ = 719712.

The previous prime is 1083559. The next prime is 1083571. The reversal of 1083561 is 1653801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1083561 - 2¹ = 1083559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1083541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (181260).

2^1083561 is an apocalyptic number.

It is an amenable number.

1083561 is a deficient number, since it is larger than the sum of its proper divisors (366519).

1083561 is an equidigital number, since it uses as much as digits as its factorization.

1083561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1083561 is about 1040.9423615167. The cubic root of 1083561 is about 102.7111965056.

The spelling of 1083561 in words is "one million, eighty-three thousand, five hundred sixty-one".