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55222614449 = 137403084777
BaseRepresentation
bin110011011011100001…
…100011100110110001
312021112120002110210122
4303123201203212301
51401043442130244
641211404140025
73663316322642
oct633341434661
9167476073718
1055222614449
11214687a9642
12a851b37615
135290a73032
14295c1bd6c9
1516831211ee
hexcdb8639b1

55222614449 has 4 divisors (see below), whose sum is σ = 55625699364. Its totient is φ = 54819529536.

The previous prime is 55222614437. The next prime is 55222614481. The reversal of 55222614449 is 94441622255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94441622255 = 518888324451.

It can be written as a sum of positive squares in 2 ways, for example, as 25866932224 + 29355682225 = 160832^2 + 171335^2 .

It is a cyclic number.

It is not a de Polignac number, because 55222614449 - 212 = 55222610353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55222614409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201542252 + ... + 201542525.

It is an arithmetic number, because the mean of its divisors is an integer number (13906424841).

Almost surely, 255222614449 is an apocalyptic number.

It is an amenable number.

55222614449 is a deficient number, since it is larger than the sum of its proper divisors (403084915).

55222614449 is a wasteful number, since it uses less digits than its factorization.

55222614449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403084914.

The product of its digits is 691200, while the sum is 44.

The spelling of 55222614449 in words is "fifty-five billion, two hundred twenty-two million, six hundred fourteen thousand, four hundred forty-nine".

Divisors: 1 137 403084777 55222614449