1161147 has 16 divisors (see below), whose sum is σ = 1756160. Its totient is φ = 676512.

The previous prime is 1161143. The next prime is 1161163. The reversal of 1161147 is 7411611.

It is not a de Polignac number, because 1161147 - 2² = 1161143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43 + ... + 1524.

It is an arithmetic number, because the mean of its divisors is an integer number (109760).

2^1161147 is an apocalyptic number.

1161147 is a deficient number, since it is larger than the sum of its proper divisors (595013).

1161147 is a wasteful number, since it uses less digits than its factorization.

1161147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its digits is 168, while the sum is 21.

The square root of 1161147 is about 1077.5653112457. The cubic root of 1161147 is about 105.1063774514.

Adding to 1161147 its reverse (7411611), we get a palindrome (8572758).

The spelling of 1161147 in words is "one million, one hundred sixty-one thousand, one hundred forty-seven".