1158271 has 2 divisors, whose sum is σ = 1158272. Its totient is φ = 1158270.

The previous prime is 1158263. The next prime is 1158293. The reversal of 1158271 is 1728511.

It is a weak prime.

It is an emirp because it is prime and its reverse (1728511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158271 - 2³ = 1158263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579135 + 579136.

It is an arithmetic number, because the mean of its divisors is an integer number (579136).

2^1158271 is an apocalyptic number.

1158271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158271 is an equidigital number, since it uses as much as digits as its factorization.

1158271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 560, while the sum is 25.

The square root of 1158271 is about 1076.2299940069. The cubic root of 1158271 is about 105.0195277361.

The spelling of 1158271 in words is "one million, one hundred fifty-eight thousand, two hundred seventy-one".