55550550055505 has 8 divisors (see below), whose sum is σ = 66727521316392. Its totient is φ = 44395865877888.

The previous prime is 55550550055471. The next prime is 55550550055513. The reversal of 55550550055505 is 50555005505555.

It can be written as a sum of positive squares in 4 ways, for example, as 20231491231249 + 35319058824256 = 4497943^2 + 5942984^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55550550055505 - 2¹⁴ = 55550550039121 is a prime.

It is a super-2 number, since 2×55550550055505² (a number of 28 digits) contains 22 as substring.

It is a Duffinian 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, 5571765332 + ... + 5571775301.

It is an arithmetic number, because the mean of its divisors is an integer number (8340940164549).

Almost surely, 2^{55550550055505} is an apocalyptic number.

It is an amenable number.

55550550055505 is a deficient number, since it is larger than the sum of its proper divisors (11176971260887).

55550550055505 is a wasteful number, since it uses less digits than its factorization.

55550550055505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11143541635.

The product of its (nonzero) digits is 9765625, while the sum is 50.

It can be divided in two parts, 55550 and 550055505, that added together give a palindrome (550111055).

The spelling of 55550550055505 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty million, fifty-five thousand, five hundred five".