1155144 has 16 divisors (see below), whose sum is σ = 2887920. Its totient is φ = 385040.

The previous prime is 1155127. The next prime is 1155149. The reversal of 1155144 is 4415511.

It is a self number, because there is not a number n which added to its sum of digits gives 1155144.

It is not an unprimeable number, because it can be changed into a prime (1155149) 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, 24042 + ... + 24089.

It is an arithmetic number, because the mean of its divisors is an integer number (180495).

2^1155144 is an apocalyptic number.

It is an amenable number.

1155144 is an abundant number, since it is smaller than the sum of its proper divisors (1732776).

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

1155144 is a wasteful number, since it uses less digits than its factorization.

1155144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48140 (or 48136 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 1155144 is about 1074.7762557854. The cubic root of 1155144 is about 104.9249350106.

It can be divided in two parts, 11 and 55144, that added together give a palindrome (55155).

The spelling of 1155144 in words is "one million, one hundred fifty-five thousand, one hundred forty-four".