1122589 has 4 divisors (see below), whose sum is σ = 1208956. Its totient is φ = 1036224.

The previous prime is 1122587. The next prime is 1122599. The reversal of 1122589 is 9852211.

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 656100 + 466489 = 810^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122589 - 2¹ = 1122587 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122587) 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, 43164 + ... + 43189.

It is an arithmetic number, because the mean of its divisors is an integer number (302239).

2^1122589 is an apocalyptic number.

It is an amenable number.

1122589 is a deficient number, since it is larger than the sum of its proper divisors (86367).

1122589 is an equidigital number, since it uses as much as digits as its factorization.

1122589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86366.

The product of its digits is 1440, while the sum is 28.

The square root of 1122589 is about 1059.5230058852. The cubic root of 1122589 is about 103.9298405008.

It can be divided in two parts, 1122 and 589, that added together give a triangular number (1711 = T₅₈).

The spelling of 1122589 in words is "one million, one hundred twenty-two thousand, five hundred eighty-nine".