1159603 has 4 divisors (see below), whose sum is σ = 1187928. Its totient is φ = 1131280.

The previous prime is 1159601. The next prime is 1159633. The reversal of 1159603 is 3069511.

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

It is a cyclic number.

It is not a de Polignac number, because 1159603 - 2¹ = 1159601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1159601) 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 in 3 ways as a sum of consecutive naturals, for example, 14101 + ... + 14182.

It is an arithmetic number, because the mean of its divisors is an integer number (296982).

2^1159603 is an apocalyptic number.

1159603 is a deficient number, since it is larger than the sum of its proper divisors (28325).

1159603 is an equidigital number, since it uses as much as digits as its factorization.

1159603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28324.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1159603 is about 1076.8486430321. The cubic root of 1159603 is about 105.0597694478.

The spelling of 1159603 in words is "one million, one hundred fifty-nine thousand, six hundred three".