1115556545 has 8 divisors (see below), whose sum is σ = 1381850880. Its totient is φ = 863656560.

The previous prime is 1115556503. The next prime is 1115556571. The reversal of 1115556545 is 5456555111.

1115556545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1115556545 - 2¹⁶ = 1115491009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115556499 and 1115556508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3598415 + ... + 3598724.

It is an arithmetic number, because the mean of its divisors is an integer number (172731360).

Almost surely, 2^1115556545 is an apocalyptic number.

It is an amenable number.

1115556545 is a deficient number, since it is larger than the sum of its proper divisors (266294335).

1115556545 is an equidigital number, since it uses as much as digits as its factorization.

1115556545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7197175.

The product of its digits is 75000, while the sum is 38.

The square root of 1115556545 is about 33399.9482784031. The cubic root of 1115556545 is about 1037.1236302603.

The spelling of 1115556545 in words is "one billion, one hundred fifteen million, five hundred fifty-six thousand, five hundred forty-five".