1123585 has 4 divisors (see below), whose sum is σ = 1348308. Its totient is φ = 898864.

The previous prime is 1123567. The next prime is 1123589. The reversal of 1123585 is 5853211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 571536 + 552049 = 756^2 + 743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123585 - 2⁵ = 1123553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123589) 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, 112354 + ... + 112363.

It is an arithmetic number, because the mean of its divisors is an integer number (337077).

2^1123585 is an apocalyptic number.

It is an amenable number.

1123585 is a deficient number, since it is larger than the sum of its proper divisors (224723).

1123585 is an equidigital number, since it uses as much as digits as its factorization.

1123585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224722.

The product of its digits is 1200, while the sum is 25.

The square root of 1123585 is about 1059.9929245047. The cubic root of 1123585 is about 103.9605681380.

Adding to 1123585 its reverse (5853211), we get a palindrome (6976796).

The spelling of 1123585 in words is "one million, one hundred twenty-three thousand, five hundred eighty-five".