1165445 has 16 divisors (see below), whose sum is σ = 1477632. Its totient is φ = 881280.

The previous prime is 1165421. The next prime is 1165447. The reversal of 1165445 is 5445611.

It is not a de Polignac number, because 1165445 - 2⁸ = 1165189 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165447) 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, 11264 + ... + 11366.

It is an arithmetic number, because the mean of its divisors is an integer number (92352).

2^1165445 is an apocalyptic number.

It is an amenable number.

1165445 is a deficient number, since it is larger than the sum of its proper divisors (312187).

1165445 is a wasteful number, since it uses less digits than its factorization.

1165445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212.

The product of its digits is 2400, while the sum is 26.

The square root of 1165445 is about 1079.5577798339. The cubic root of 1165445 is about 105.2359019563.

It can be divided in two parts, 11 and 65445, that added together give a palindrome (65456).

The spelling of 1165445 in words is "one million, one hundred sixty-five thousand, four hundred forty-five".