1163559 has 4 divisors (see below), whose sum is σ = 1551416. Its totient is φ = 775704.

The previous prime is 1163557. The next prime is 1163581. The reversal of 1163559 is 9553611.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1163559 - 2¹ = 1163557 is a prime.

It is a D-number.

It is a Duffinian number.

1163559 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163551) 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, 193924 + ... + 193929.

It is an arithmetic number, because the mean of its divisors is an integer number (387854).

2^1163559 is an apocalyptic number.

1163559 is a deficient number, since it is larger than the sum of its proper divisors (387857).

1163559 is an equidigital number, since it uses as much as digits as its factorization.

1163559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387856.

The product of its digits is 4050, while the sum is 30.

The square root of 1163559 is about 1078.6839203400. The cubic root of 1163559 is about 105.1791047475.

The spelling of 1163559 in words is "one million, one hundred sixty-three thousand, five hundred fifty-nine".