55505505555533 has 4 divisors (see below), whose sum is σ = 60551460606048. Its totient is φ = 50459550505020.

The previous prime is 55505505555473. The next prime is 55505505555553. The reversal of 55505505555533 is 33555550550555.

55505505555533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55505505555533 - 2⁸ = 55505505555277 is a prime.

It is a super-2 number, since 2×55505505555533² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505505555553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2522977525241 + ... + 2522977525262.

It is an arithmetic number, because the mean of its divisors is an integer number (15137865151512).

Almost surely, 2^{55505505555533} is an apocalyptic number.

It is an amenable number.

55505505555533 is a deficient number, since it is larger than the sum of its proper divisors (5045955050515).

55505505555533 is a wasteful number, since it uses less digits than its factorization.

55505505555533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045955050514.

The product of its (nonzero) digits is 87890625, while the sum is 56.

The spelling of 55505505555533 in words is "fifty-five trillion, five hundred five billion, five hundred five million, five hundred fifty-five thousand, five hundred thirty-three".