5551111609 has 8 divisors (see below), whose sum is σ = 5880925728. Its totient is φ = 5221661760.

The previous prime is 5551111607. The next prime is 5551111613. The reversal of 5551111609 is 9061111555.

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

It is a cyclic number.

It is not a de Polignac number, because 5551111609 - 2¹ = 5551111607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5551111607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59367 + ... + 120940.

It is an arithmetic number, because the mean of its divisors is an integer number (735115716).

Almost surely, 2^5551111609 is an apocalyptic number.

It is an amenable number.

5551111609 is a deficient number, since it is larger than the sum of its proper divisors (329814119).

5551111609 is a wasteful number, since it uses less digits than its factorization.

5551111609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182135.

The product of its (nonzero) digits is 6750, while the sum is 34.

The square root of 5551111609 is about 74505.7823863356. The cubic root of 5551111609 is about 1770.6252495430.

The spelling of 5551111609 in words is "five billion, five hundred fifty-one million, one hundred eleven thousand, six hundred nine".