1155912 has 16 divisors (see below), whose sum is σ = 2889840. Its totient is φ = 385296.

The previous prime is 1155907. The next prime is 1155919. The reversal of 1155912 is 2195511.

It is a super-3 number, since 3×1155912³ = 4633354950454531584, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 48163 = 1155912 / (1 + 1 + 5 + 5 + 9 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (1155919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24058 + ... + 24105.

It is an arithmetic number, because the mean of its divisors is an integer number (180615).

2^1155912 is an apocalyptic number.

1155912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1155912 is an abundant number, since it is smaller than the sum of its proper divisors (1733928).

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

1155912 is a wasteful number, since it uses less digits than its factorization.

1155912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48172 (or 48168 counting only the distinct ones).

The product of its digits is 450, while the sum is 24.

The square root of 1155912 is about 1075.1334800851. The cubic root of 1155912 is about 104.9481830496.

The spelling of 1155912 in words is "one million, one hundred fifty-five thousand, nine hundred twelve".