1155040500 has 48 divisors (see below), whose sum is σ = 3363482304. Its totient is φ = 308010400.

The previous prime is 1155040499. The next prime is 1155040531. The reversal of 1155040500 is 50405511.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 383514 + ... + 386513.

It is an arithmetic number, because the mean of its divisors is an integer number (70072548).

Almost surely, 2^1155040500 is an apocalyptic number.

1155040500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155040500 is an abundant number, since it is smaller than the sum of its proper divisors (2208441804).

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

1155040500 is a wasteful number, since it uses less digits than its factorization.

1155040500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770049 (or 770037 counting only the distinct ones).

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

The square root of 1155040500 is about 33985.8867767195. The cubic root of 1155040500 is about 1049.2180118627.

The spelling of 1155040500 in words is "one billion, one hundred fifty-five million, forty thousand, five hundred".