55055545506 has 64 divisors (see below), whose sum is σ = 132043443840. Its totient is φ = 16903321920.

The previous prime is 55055545499. The next prime is 55055545541. The reversal of 55055545506 is 60554555055.

55055545506 is a `hidden beast` number, since 5 + 5 + 0 + 55 + 545 + 50 + 6 = 666.

It is a super-2 number, since 2×55055545506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238561 + ... + 408683.

It is an arithmetic number, because the mean of its divisors is an integer number (2063178810).

Almost surely, 2^55055545506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55055545506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66021721920).

55055545506 is an abundant number, since it is smaller than the sum of its proper divisors (76987898334).

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

55055545506 is a wasteful number, since it uses less digits than its factorization.

55055545506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170608 (or 170602 counting only the distinct ones).

The product of its (nonzero) digits is 1875000, while the sum is 45.

The spelling of 55055545506 in words is "fifty-five billion, fifty-five million, five hundred forty-five thousand, five hundred six".