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55200047689 = 65998364911
BaseRepresentation
bin110011011010001011…
…011110001001001001
312021110222121222000201
4303122023132021021
51401022203011224
641205240332201
73662623443433
oct633213361111
9167428558021
1055200047689
1121456a95926
12a846474061
1352891a1517
1429591c7653
151681164a44
hexcda2de249

55200047689 has 4 divisors (see below), whose sum is σ = 55208419200. Its totient is φ = 55191676180.

The previous prime is 55200047687. The next prime is 55200047743. The reversal of 55200047689 is 98674000255.

55200047689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98674000255 = 519734800051.

It is a cyclic number.

It is not a de Polignac number, because 55200047689 - 21 = 55200047687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55200047687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4175857 + ... + 4189054.

It is an arithmetic number, because the mean of its divisors is an integer number (13802104800).

Almost surely, 255200047689 is an apocalyptic number.

It is an amenable number.

55200047689 is a deficient number, since it is larger than the sum of its proper divisors (8371511).

55200047689 is an equidigital number, since it uses as much as digits as its factorization.

55200047689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371510.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 55200047689 in words is "fifty-five billion, two hundred million, forty-seven thousand, six hundred eighty-nine".

Divisors: 1 6599 8364911 55200047689