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55050505505 = 511010101101
BaseRepresentation
bin110011010001010001…
…000000110100100001
312021002120020102201022
4303101101000310201
51400220412134010
641142335215225
73656126401412
oct632121006441
9167076212638
1055050505505
112138a636646
12a804377515
135264202b18
1429433bb809
151672e75d55
hexcd1440d21

55050505505 has 4 divisors (see below), whose sum is σ = 66060606612. Its totient is φ = 44040404400.

The previous prime is 55050505487. The next prime is 55050505507. The reversal of 55050505505 is 50550505055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39803442064 + 15247063441 = 199508^2 + 123479^2 .

It is not a de Polignac number, because 55050505505 - 220 = 55049456929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55050505507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5505050546 + ... + 5505050555.

It is an arithmetic number, because the mean of its divisors is an integer number (16515151653).

Almost surely, 255050505505 is an apocalyptic number.

It is an amenable number.

55050505505 is a deficient number, since it is larger than the sum of its proper divisors (11010101107).

55050505505 is a wasteful number, since it uses less digits than its factorization.

55050505505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010101106.

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

The spelling of 55050505505 in words is "fifty-five billion, fifty million, five hundred five thousand, five hundred five".

Divisors: 1 5 11010101101 55050505505