1271097253 has 2 divisors, whose sum is σ = 1271097254. Its totient is φ = 1271097252.

The previous prime is 1271097209. The next prime is 1271097257. The reversal of 1271097253 is 3527901721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1104764644 + 166332609 = 33238^2 + 12897^2 .

It is an emirp because it is prime and its reverse (3527901721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1271097253 - 2²⁹ = 734226341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1271097257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635548626 + 635548627.

It is an arithmetic number, because the mean of its divisors is an integer number (635548627).

Almost surely, 2^1271097253 is an apocalyptic number.

It is an amenable number.

1271097253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1271097253 is an equidigital number, since it uses as much as digits as its factorization.

1271097253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 1271097253 is about 35652.4508694704. The cubic root of 1271097253 is about 1083.2439198367.

Adding to 1271097253 its reverse (3527901721), we get a palindrome (4798998974).

The spelling of 1271097253 in words is "one billion, two hundred seventy-one million, ninety-seven thousand, two hundred fifty-three".