1115556552 has 96 divisors (see below), whose sum is σ = 3301534080. Its totient is φ = 337476480.

The previous prime is 1115556503. The next prime is 1115556571. The reversal of 1115556552 is 2556555111.

1115556552 is a `hidden beast` number, since 1 + 1 + 1 + 55 + 56 + 552 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 872938 + ... + 874214.

It is an arithmetic number, because the mean of its divisors is an integer number (34390980).

Almost surely, 2^1115556552 is an apocalyptic number.

1115556552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115556552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650767040).

1115556552 is an abundant number, since it is smaller than the sum of its proper divisors (2185977528).

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

1115556552 is a wasteful number, since it uses less digits than its factorization.

1115556552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403 (or 2396 counting only the distinct ones).

The product of its digits is 37500, while the sum is 36.

The square root of 1115556552 is about 33399.9483831936. The cubic root of 1115556552 is about 1037.1236324296.

The spelling of 1115556552 in words is "one billion, one hundred fifteen million, five hundred fifty-six thousand, five hundred fifty-two".