1123155 has 24 divisors (see below), whose sum is σ = 2124720. Its totient is φ = 544320.

The previous prime is 1123151. The next prime is 1123181. The reversal of 1123155 is 5513211.

1123155 = 82³ + 83³.

It is not a de Polignac number, because 1123155 - 2² = 1123151 is a prime.

It is a super-2 number, since 2×1123155² = 2522954308050, which contains 22 as substring.

1123155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1123151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640 + ... + 1629.

It is an arithmetic number, because the mean of its divisors is an integer number (88530).

2^1123155 is an apocalyptic number.

1123155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1123155 is a deficient number, since it is larger than the sum of its proper divisors (1001565).

1123155 is a wasteful number, since it uses less digits than its factorization.

1123155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291 (or 2288 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1123155 is about 1059.7900735523. The cubic root of 1123155 is about 103.9473044187.

Adding to 1123155 its reverse (5513211), we get a palindrome (6636366).

The spelling of 1123155 in words is "one million, one hundred twenty-three thousand, one hundred fifty-five".