1155205200 has 60 divisors (see below), whose sum is σ = 3700511168. Its totient is φ = 308054400.

The previous prime is 1155205171. The next prime is 1155205213. The reversal of 1155205200 is 25025511.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480136 + ... + 482535.

Almost surely, 2^1155205200 is an apocalyptic number.

1155205200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155205200 is an abundant number, since it is smaller than the sum of its proper divisors (2545305968).

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

1155205200 is a wasteful number, since it uses less digits than its factorization.

1155205200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962692 (or 962681 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1155205200 is about 33988.3097549731. The cubic root of 1155205200 is about 1049.2678796650.

The spelling of 1155205200 in words is "one billion, one hundred fifty-five million, two hundred five thousand, two hundred".