1115544505 has 32 divisors (see below), whose sum is σ = 1491001344. Its totient is φ = 796916736.

The previous prime is 1115544497. The next prime is 1115544509. The reversal of 1115544505 is 5054455111.

It is a cyclic number.

It is not a de Polignac number, because 1115544505 - 2³ = 1115544497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115544509) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 246039 + ... + 250531.

It is an arithmetic number, because the mean of its divisors is an integer number (46593792).

Almost surely, 2^1115544505 is an apocalyptic number.

It is an amenable number.

1115544505 is a deficient number, since it is larger than the sum of its proper divisors (375456839).

1115544505 is a wasteful number, since it uses less digits than its factorization.

1115544505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4665.

The product of its (nonzero) digits is 10000, while the sum is 31.

The square root of 1115544505 is about 33399.7680381167. The cubic root of 1115544505 is about 1037.1198990843.

Adding to 1115544505 its reverse (5054455111), we get a palindrome (6169999616).

The spelling of 1115544505 in words is "one billion, one hundred fifteen million, five hundred forty-four thousand, five hundred five".