5551554559 has 4 divisors (see below), whose sum is σ = 5552717616. Its totient is φ = 5550391504.

The previous prime is 5551554557. The next prime is 5551554599. The reversal of 5551554559 is 9554551555.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5551554559 - 2¹ = 5551554557 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551554553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574339 + ... + 583924.

It is an arithmetic number, because the mean of its divisors is an integer number (1388179404).

Almost surely, 2^5551554559 is an apocalyptic number.

5551554559 is a deficient number, since it is larger than the sum of its proper divisors (1163057).

5551554559 is a wasteful number, since it uses less digits than its factorization.

5551554559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163056.

The product of its digits is 2812500, while the sum is 49.

The square root of 5551554559 is about 74508.7549151105. The cubic root of 5551554559 is about 1770.6723438699.

The spelling of 5551554559 in words is "five billion, five hundred fifty-one million, five hundred fifty-four thousand, five hundred fifty-nine".