1115556 has 24 divisors (see below), whose sum is σ = 2803584. Its totient is φ = 343200.

The previous prime is 1115551. The next prime is 1115561. The reversal of 1115556 is 6555111.

It is an interprime number because it is at equal distance from previous prime (1115551) and next prime (1115561).

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 (1115551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3420 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (116816).

2^1115556 is an apocalyptic number.

It is an amenable number.

1115556 is an abundant number, since it is smaller than the sum of its proper divisors (1688028).

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

1115556 is a wasteful number, since it uses less digits than its factorization.

1115556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7171 (or 7169 counting only the distinct ones).

The product of its digits is 750, while the sum is 24.

The square root of 1115556 is about 1056.1988449151. The cubic root of 1115556 is about 103.7123461366.

It can be divided in two parts, 11155 and 56, that added together give a palindrome (11211).

The spelling of 1115556 in words is "one million, one hundred fifteen thousand, five hundred fifty-six".