55555005506 has 96 divisors (see below), whose sum is σ = 116965392768. Its totient is φ = 19110769920.

The previous prime is 55555005497. The next prime is 55555005509. The reversal of 55555005506 is 60550055555.

55555005506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55555005509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1032830 + ... + 1085286.

It is an arithmetic number, because the mean of its divisors is an integer number (1218389508).

Almost surely, 2^55555005506 is an apocalyptic number.

55555005506 is an abundant number, since it is smaller than the sum of its proper divisors (61410387262).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55555005506 is a wasteful number, since it uses less digits than its factorization.

55555005506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52536 (or 52513 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 41.

The spelling of 55555005506 in words is "fifty-five billion, five hundred fifty-five million, five thousand, five hundred six".