1115345555 has 16 divisors (see below), whose sum is σ = 1397882880. Its totient is φ = 852702048.

The previous prime is 1115345551. The next prime is 1115345563. The reversal of 1115345555 is 5555435111.

It is a cyclic number.

It is not a de Polignac number, because 1115345555 - 2² = 1115345551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1115345551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143294 + ... + 150876.

It is an arithmetic number, because the mean of its divisors is an integer number (87367680).

Almost surely, 2^1115345555 is an apocalyptic number.

1115345555 is a deficient number, since it is larger than the sum of its proper divisors (282537325).

1115345555 is a wasteful number, since it uses less digits than its factorization.

1115345555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8890.

The product of its digits is 37500, while the sum is 35.

The square root of 1115345555 is about 33396.7895912167. The cubic root of 1115345555 is about 1037.0582409223.

The spelling of 1115345555 in words is "one billion, one hundred fifteen million, three hundred forty-five thousand, five hundred fifty-five".