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55030554993 = 3109168289159
BaseRepresentation
bin110011010000000100…
…111010000101110001
312021001011200211202110
4303100010322011301
51400200310224433
641140343435533
73655464666561
oct632004720561
9167034624673
1055030554993
112137a34a517
12a7b9755ba9
13526003909b
1429408a6da1
151671334963
hexcd013a171

55030554993 has 8 divisors (see below), whose sum is σ = 74047230400. Its totient is φ = 36350458128.

The previous prime is 55030554991. The next prime is 55030555009. The reversal of 55030554993 is 39945503055.

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

It is not a de Polignac number, because 55030554993 - 21 = 55030554991 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 (55030554991) 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, 84144253 + ... + 84144906.

It is an arithmetic number, because the mean of its divisors is an integer number (9255903800).

Almost surely, 255030554993 is an apocalyptic number.

It is an amenable number.

55030554993 is a deficient number, since it is larger than the sum of its proper divisors (19016675407).

55030554993 is a wasteful number, since it uses less digits than its factorization.

55030554993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168289271.

The product of its (nonzero) digits is 1822500, while the sum is 48.

The spelling of 55030554993 in words is "fifty-five billion, thirty million, five hundred fifty-four thousand, nine hundred ninety-three".

Divisors: 1 3 109 327 168289159 504867477 18343518331 55030554993