1152155 has 4 divisors (see below), whose sum is σ = 1382592. Its totient is φ = 921720.

The previous prime is 1152149. The next prime is 1152157. The reversal of 1152155 is 5512511.

It is a happy number.

1152155 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5512511 = 71 ⋅77641.

It is not a de Polignac number, because 1152155 - 2⁶ = 1152091 is a prime.

It is a super-2 number, since 2×1152155² = 2654922288050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152157) 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, 115211 + ... + 115220.

It is an arithmetic number, because the mean of its divisors is an integer number (345648).

2^1152155 is an apocalyptic number.

1152155 is a deficient number, since it is larger than the sum of its proper divisors (230437).

1152155 is an equidigital number, since it uses as much as digits as its factorization.

1152155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230436.

The product of its digits is 250, while the sum is 20.

The square root of 1152155 is about 1073.3848331330. The cubic root of 1152155 is about 104.8343571190.

Adding to 1152155 its reverse (5512511), we get a palindrome (6664666).

The spelling of 1152155 in words is "one million, one hundred fifty-two thousand, one hundred fifty-five".