55500555805 has 8 divisors (see below), whose sum is σ = 66968627544. Its totient is φ = 44155137600.

The previous prime is 55500555787. The next prime is 55500555821. The reversal of 55500555805 is 50855500555.

It is a happy number.

55500555805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3090564 + 55497465241 = 1758^2 + 235579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55500555805 - 2⁹ = 55500555293 is a prime.

It is a super-3 number, since 3×55500555805³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 30662386 + ... + 30664195.

It is an arithmetic number, because the mean of its divisors is an integer number (8371078443).

Almost surely, 2^55500555805 is an apocalyptic number.

It is an amenable number.

55500555805 is a deficient number, since it is larger than the sum of its proper divisors (11468071739).

55500555805 is a wasteful number, since it uses less digits than its factorization.

55500555805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61326767.

The product of its (nonzero) digits is 625000, while the sum is 43.

The spelling of 55500555805 in words is "fifty-five billion, five hundred million, five hundred fifty-five thousand, eight hundred five".