1155271 has 4 divisors (see below), whose sum is σ = 1244152. Its totient is φ = 1066392.

The previous prime is 1155263. The next prime is 1155293. The reversal of 1155271 is 1725511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1725511 = 47 ⋅36713.

It is a cyclic number.

It is not a de Polignac number, because 1155271 - 2³ = 1155263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155211) 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, 44421 + ... + 44446.

It is an arithmetic number, because the mean of its divisors is an integer number (311038).

2^1155271 is an apocalyptic number.

1155271 is a deficient number, since it is larger than the sum of its proper divisors (88881).

1155271 is an equidigital number, since it uses as much as digits as its factorization.

1155271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88880.

The product of its digits is 350, while the sum is 22.

The square root of 1155271 is about 1074.8353362260. The cubic root of 1155271 is about 104.9287801238.

The spelling of 1155271 in words is "one million, one hundred fifty-five thousand, two hundred seventy-one".