1161159 has 8 divisors (see below), whose sum is σ = 1554672. Its totient is φ = 770880.

The previous prime is 1161143. The next prime is 1161163. The reversal of 1161159 is 9511611.

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

It is not a de Polignac number, because 1161159 - 2⁴ = 1161143 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

1161159 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219 + ... + 1539.

It is an arithmetic number, because the mean of its divisors is an integer number (194334).

2^1161159 is an apocalyptic number.

1161159 is a deficient number, since it is larger than the sum of its proper divisors (393513).

1161159 is a wasteful number, since it uses less digits than its factorization.

1161159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617.

The product of its digits is 270, while the sum is 24.

The square root of 1161159 is about 1077.5708793393. The cubic root of 1161159 is about 105.1067395279.

It can be divided in two parts, 116 and 1159, that added together give a triangular number (1275 = T₅₀).

The spelling of 1161159 in words is "one million, one hundred sixty-one thousand, one hundred fifty-nine".