1145152271 has 2 divisors, whose sum is σ = 1145152272. Its totient is φ = 1145152270.

The previous prime is 1145152243. The next prime is 1145152279. The reversal of 1145152271 is 1722515411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145152271 is a prime.

It is a super-2 number, since 2×1145152271² = 2622747447552914882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145152279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572576135 + 572576136.

It is an arithmetic number, because the mean of its divisors is an integer number (572576136).

Almost surely, 2^1145152271 is an apocalyptic number.

1145152271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145152271 is an equidigital number, since it uses as much as digits as its factorization.

1145152271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

The square root of 1145152271 is about 33840.0985666413. The cubic root of 1145152271 is about 1046.2153304554.

Adding to 1145152271 its reverse (1722515411), we get a palindrome (2867667682).

The spelling of 1145152271 in words is "one billion, one hundred forty-five million, one hundred fifty-two thousand, two hundred seventy-one".