1115555133 has 32 divisors (see below), whose sum is σ = 1859208192. Its totient is φ = 578016000.

The previous prime is 1115555099. The next prime is 1115555141. The reversal of 1115555133 is 3315555111.

It is not a de Polignac number, because 1115555133 - 2¹⁰ = 1115554109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115555133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115555033) 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, 86610 + ... + 98652.

It is an arithmetic number, because the mean of its divisors is an integer number (58100256).

Almost surely, 2^1115555133 is an apocalyptic number.

It is an amenable number.

1115555133 is a deficient number, since it is larger than the sum of its proper divisors (743653059).

1115555133 is a wasteful number, since it uses less digits than its factorization.

1115555133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12465.

The product of its digits is 5625, while the sum is 30.

The square root of 1115555133 is about 33399.9271406391. The cubic root of 1115555133 is about 1037.1231926852.

The spelling of 1115555133 in words is "one billion, one hundred fifteen million, five hundred fifty-five thousand, one hundred thirty-three".