5559815655 has 24 divisors (see below), whose sum is σ = 9686961648. Its totient is φ = 2949866496.

The previous prime is 5559815629. The next prime is 5559815761. The reversal of 5559815655 is 5565189555.

5559815655 is a `hidden beast` number, since 5 + 559 + 81 + 5 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 5559815655 - 2⁵ = 5559815623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311397 + ... + 328766.

It is an arithmetic number, because the mean of its divisors is an integer number (403623402).

Almost surely, 2^5559815655 is an apocalyptic number.

5559815655 is a deficient number, since it is larger than the sum of its proper divisors (4127145993).

5559815655 is a wasteful number, since it uses less digits than its factorization.

5559815655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640367 (or 640364 counting only the distinct ones).

The product of its digits is 6750000, while the sum is 54.

The square root of 5559815655 is about 74564.1713894817. The cubic root of 5559815655 is about 1771.5502027580.

It can be divided in two parts, 55598 and 15655, that added together give a triangular number (71253 = T₃₇₇).

The spelling of 5559815655 in words is "five billion, five hundred fifty-nine million, eight hundred fifteen thousand, six hundred fifty-five".