1144155 has 16 divisors (see below), whose sum is σ = 1854720. Its totient is φ = 602208.

The previous prime is 1144153. The next prime is 1144163. The reversal of 1144155 is 5514411.

It is not a de Polignac number, because 1144155 - 2¹ = 1144153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786 + ... + 1704.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

2^1144155 is an apocalyptic number.

1144155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1144155 is a deficient number, since it is larger than the sum of its proper divisors (710565).

1144155 is an equidigital number, since it uses as much as digits as its factorization.

1144155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010.

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

The square root of 1144155 is about 1069.6518125072. The cubic root of 1144155 is about 104.5911538766.

Adding to 1144155 its reverse (5514411), we get a palindrome (6658566).

The spelling of 1144155 in words is "one million, one hundred forty-four thousand, one hundred fifty-five".