1129271255 has 16 divisors (see below), whose sum is σ = 1598674944. Its totient is φ = 749377440.

The previous prime is 1129271243. The next prime is 1129271309. The reversal of 1129271255 is 5521729211.

It is not a de Polignac number, because 1129271255 - 2⁴ = 1129271239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519317 + ... + 521486.

It is an arithmetic number, because the mean of its divisors is an integer number (99917184).

Almost surely, 2^1129271255 is an apocalyptic number.

1129271255 is a deficient number, since it is larger than the sum of its proper divisors (469403689).

1129271255 is a wasteful number, since it uses less digits than its factorization.

1129271255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040846.

The product of its digits is 12600, while the sum is 35.

The square root of 1129271255 is about 33604.6314516318. The cubic root of 1129271255 is about 1041.3564816234.

The spelling of 1129271255 in words is "one billion, one hundred twenty-nine million, two hundred seventy-one thousand, two hundred fifty-five".