1143585 has 32 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 592704.

The previous prime is 1143577. The next prime is 1143587. The reversal of 1143585 is 5853411.

It is not a de Polignac number, because 1143585 - 2³ = 1143577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5707 + ... + 5903.

It is an arithmetic number, because the mean of its divisors is an integer number (65340).

2^1143585 is an apocalyptic number.

1143585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1143585 is a deficient number, since it is larger than the sum of its proper divisors (947295).

1143585 is a wasteful number, since it uses less digits than its factorization.

1143585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 248 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1143585 is about 1069.3853374720. The cubic root of 1143585 is about 104.5737824364.

Adding to 1143585 its reverse (5853411), we get a palindrome (6996996).

It can be divided in two parts, 1143 and 585, that added together give a cube (1728 = 12³).

The spelling of 1143585 in words is "one million, one hundred forty-three thousand, five hundred eighty-five".