55500005504 has 64 divisors (see below), whose sum is σ = 112376511000. Its totient is φ = 27297718272.

The previous prime is 55500005489. The next prime is 55500005543. The reversal of 55500005504 is 40550000555.

It can be written as a sum of positive squares in 4 ways, for example, as 41717245504 + 13782760000 = 204248^2 + 117400^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×55500005504² (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 7 ways as a sum of consecutive naturals, for example, 3627182 + ... + 3642450.

Almost surely, 2^55500005504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55500005504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56188255500).

55500005504 is an abundant number, since it is smaller than the sum of its proper divisors (56876505496).

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

55500005504 is a wasteful number, since it uses less digits than its factorization.

55500005504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15745 (or 15733 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 29.

The spelling of 55500005504 in words is "fifty-five billion, five hundred million, five thousand, five hundred four".