1001165 has 16 divisors (see below), whose sum is σ = 1330560. Its totient is φ = 717120.

The previous prime is 1001159. The next prime is 1001173. The reversal of 1001165 is 5611001.

It is not a de Polignac number, because 1001165 - 2¹² = 997069 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5912 + ... + 6078.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1001165 is an apocalyptic number.

It is an amenable number.

1001165 is a deficient number, since it is larger than the sum of its proper divisors (329395).

1001165 is a wasteful number, since it uses less digits than its factorization.

1001165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 1001165 is about 1000.5823304456. The cubic root of 1001165 is about 100.0388182628.

Adding to 1001165 its reverse (5611001), we get a palindrome (6612166).

The spelling of 1001165 in words is "one million, one thousand, one hundred sixty-five".