55500550505 has 8 divisors (see below), whose sum is σ = 70518346632. Its totient is φ = 41788649728.

The previous prime is 55500550477. The next prime is 55500550507. The reversal of 55500550505 is 50505500555.

55500550505 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 18030044176 + 37470506329 = 134276^2 + 193573^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55500550505 is a prime.

It is a super-2 number, since 2×55500550505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55500550507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326473742 + ... + 326473911.

It is an arithmetic number, because the mean of its divisors is an integer number (8814793329).

Almost surely, 2^55500550505 is an apocalyptic number.

It is an amenable number.

55500550505 is a deficient number, since it is larger than the sum of its proper divisors (15017796127).

55500550505 is a wasteful number, since it uses less digits than its factorization.

55500550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652947675.

The product of its (nonzero) digits is 78125, while the sum is 35.

The spelling of 55500550505 in words is "fifty-five billion, five hundred million, five hundred fifty thousand, five hundred five".