1271257055 has 8 divisors (see below), whose sum is σ = 1529906832. Its totient is φ = 1014073408.

The previous prime is 1271257037. The next prime is 1271257067. The reversal of 1271257055 is 5507521721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1271257055 - 2²⁴ = 1254479839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364622 + ... + 368091.

It is an arithmetic number, because the mean of its divisors is an integer number (191238354).

Almost surely, 2^1271257055 is an apocalyptic number.

1271257055 is a deficient number, since it is larger than the sum of its proper divisors (258649777).

1271257055 is an equidigital number, since it uses as much as digits as its factorization.

1271257055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733065.

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 1271257055 is about 35654.6919072371. The cubic root of 1271257055 is about 1083.2893129779.

Adding to 1271257055 its reverse (5507521721), we get a palindrome (6778778776).

The spelling of 1271257055 in words is "one billion, two hundred seventy-one million, two hundred fifty-seven thousand, fifty-five".