1123564 has 48 divisors (see below), whose sum is σ = 2370816. Its totient is φ = 460800.

The previous prime is 1123561. The next prime is 1123567. The reversal of 1123564 is 4653211.

1123564 is nontrivially palindromic in base 12.

It is an interprime number because it is at equal distance from previous prime (1123561) and next prime (1123567).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 27384 + ... + 27424.

It is an arithmetic number, because the mean of its divisors is an integer number (49392).

2^1123564 is an apocalyptic number.

It is an amenable number.

1123564 is an abundant number, since it is smaller than the sum of its proper divisors (1247252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123564 is a wasteful number, since it uses less digits than its factorization.

1123564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 104 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1123564 is about 1059.9830187319. The cubic root of 1123564 is about 103.9599204536.

Adding to 1123564 its reverse (4653211), we get a palindrome (5776775).

The spelling of 1123564 in words is "one million, one hundred twenty-three thousand, five hundred sixty-four".