1072165 has 4 divisors (see below), whose sum is σ = 1286604. Its totient is φ = 857728.

The previous prime is 1072163. The next prime is 1072187. The reversal of 1072165 is 5612701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5612701 = 2011 ⋅2791.

It can be written as a sum of positive squares in 2 ways, for example, as 842724 + 229441 = 918^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072165 - 2¹ = 1072163 is a prime.

It is a super-2 number, since 2×1072165² = 2299075574450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072163) 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, 107212 + ... + 107221.

It is an arithmetic number, because the mean of its divisors is an integer number (321651).

2^1072165 is an apocalyptic number.

It is an amenable number.

1072165 is a deficient number, since it is larger than the sum of its proper divisors (214439).

1072165 is an equidigital number, since it uses as much as digits as its factorization.

1072165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214438.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1072165 is about 1035.4540067043. The cubic root of 1072165 is about 102.3498495578.

Adding to 1072165 its reverse (5612701), we get a palindrome (6684866).

The spelling of 1072165 in words is "one million, seventy-two thousand, one hundred sixty-five".