1123556 has 12 divisors (see below), whose sum is σ = 2247168. Its totient is φ = 481512.

The previous prime is 1123553. The next prime is 1123561. The reversal of 1123556 is 6553211.

1123556 is an admirable number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1123553) 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, 20036 + ... + 20091.

It is an arithmetic number, because the mean of its divisors is an integer number (187264).

2^1123556 is an apocalyptic number.

It is an amenable number.

1123556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1123556 is a wasteful number, since it uses less digits than its factorization.

1123556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40138 (or 40136 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 1123556 is about 1059.9792450798. The cubic root of 1123556 is about 103.9596737145.

Adding to 1123556 its reverse (6553211), we get a palindrome (7676767).

The spelling of 1123556 in words is "one million, one hundred twenty-three thousand, five hundred fifty-six".