1155253271 has 2 divisors, whose sum is σ = 1155253272. Its totient is φ = 1155253270.

The previous prime is 1155253201. The next prime is 1155253273. The reversal of 1155253271 is 1723525511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1155253271 - 2¹⁰ = 1155252247 is a prime.

It is a super-2 number, since 2×1155253271² = 2669220240312398882, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1155253273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1155253273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577626635 + 577626636.

It is an arithmetic number, because the mean of its divisors is an integer number (577626636).

Almost surely, 2^1155253271 is an apocalyptic number.

1155253271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155253271 is an equidigital number, since it uses as much as digits as its factorization.

1155253271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 32.

The square root of 1155253271 is about 33989.0169172337. The cubic root of 1155253271 is about 1049.2824336901.

Adding to 1155253271 its reverse (1723525511), we get a palindrome (2878778782).

The spelling of 1155253271 in words is "one billion, one hundred fifty-five million, two hundred fifty-three thousand, two hundred seventy-one".