1115541200 has 60 divisors (see below), whose sum is σ = 2766572928. Its totient is φ = 431817600.

The previous prime is 1115541199. The next prime is 1115541227. The reversal of 1115541200 is 21455111.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32582 + ... + 57381.

Almost surely, 2^1115541200 is an apocalyptic number.

1115541200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115541200 is an abundant number, since it is smaller than the sum of its proper divisors (1651031728).

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

1115541200 is a wasteful number, since it uses less digits than its factorization.

1115541200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90012 (or 90001 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1115541200 is about 33399.7185616885. The cubic root of 1115541200 is about 1037.1188748656.

Adding to 1115541200 its reverse (21455111), we get a palindrome (1136996311).

The spelling of 1115541200 in words is "one billion, one hundred fifteen million, five hundred forty-one thousand, two hundred".