1155044200 has 48 divisors (see below), whose sum is σ = 2826828000. Its totient is φ = 437699520.

The previous prime is 1155044183. The next prime is 1155044201. The reversal of 1155044200 is 24405511.

It is not an unprimeable number, because it can be changed into a prime (1155044201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 148180 + ... + 155779.

It is an arithmetic number, because the mean of its divisors is an integer number (58892250).

Almost surely, 2^1155044200 is an apocalyptic number.

1155044200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155044200 is an abundant number, since it is smaller than the sum of its proper divisors (1671783800).

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

1155044200 is a wasteful number, since it uses less digits than its factorization.

1155044200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303994 (or 303985 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1155044200 is about 33985.9412110361. The cubic root of 1155044200 is about 1049.2191321994.

Adding to 1155044200 its reverse (24405511), we get a palindrome (1179449711).

The spelling of 1155044200 in words is "one billion, one hundred fifty-five million, forty-four thousand, two hundred".