1123569 has 12 divisors (see below), whose sum is σ = 1637376. Its totient is φ = 742392.

The previous prime is 1123567. The next prime is 1123589. The reversal of 1123569 is 9653211.

It is not a de Polignac number, because 1123569 - 2¹ = 1123567 is a prime.

It is a super-2 number, since 2×1123569² = 2524814595522, which contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 652 + ... + 1634.

It is an arithmetic number, because the mean of its divisors is an integer number (136448).

2^1123569 is an apocalyptic number.

It is an amenable number.

1123569 is a deficient number, since it is larger than the sum of its proper divisors (513807).

1123569 is a wasteful number, since it uses less digits than its factorization.

1123569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1113 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1123569 is about 1059.9853772576. The cubic root of 1123569 is about 103.9600746649.

The spelling of 1123569 in words is "one million, one hundred twenty-three thousand, five hundred sixty-nine".