1126551129 has 32 divisors (see below), whose sum is σ = 1694773248. Its totient is φ = 659448000.

The previous prime is 1126551089. The next prime is 1126551143. The reversal of 1126551129 is 9211556211.

It is not a de Polignac number, because 1126551129 - 2¹⁵ = 1126518361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 1126551129.

It is not an unprimeable number, because it can be changed into a prime (1126551149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 871974 + ... + 873264.

It is an arithmetic number, because the mean of its divisors is an integer number (52961664).

Almost surely, 2^1126551129 is an apocalyptic number.

It is an amenable number.

1126551129 is a deficient number, since it is larger than the sum of its proper divisors (568222119).

1126551129 is a wasteful number, since it uses less digits than its factorization.

1126551129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its digits is 5400, while the sum is 33.

The square root of 1126551129 is about 33564.1345635486. The cubic root of 1126551129 is about 1040.5196888009.

It can be divided in two parts, 1126 and 551129, that added together give a palindrome (552255).

The spelling of 1126551129 in words is "one billion, one hundred twenty-six million, five hundred fifty-one thousand, one hundred twenty-nine".