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51552105143 = 7113718094807
BaseRepresentation
bin110000000000101111…
…101011001010110111
311221001202101021121112
4300000233223022313
51321034314331033
635403244305235
73503336443430
oct600057531267
9157052337545
1051552105143
111a954901680
129ba884221b
134b274a6636
1426d0918487
15151ac82c48
hexc00beb2b7

51552105143 has 16 divisors (see below), whose sum is σ = 66009859584. Its totient is φ = 39084780960.

The previous prime is 51552105139. The next prime is 51552105149. The reversal of 51552105143 is 34150125515.

51552105143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51552105143 - 22 = 51552105139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51552105149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9044555 + ... + 9050252.

It is an arithmetic number, because the mean of its divisors is an integer number (4125616224).

Almost surely, 251552105143 is an apocalyptic number.

51552105143 is a deficient number, since it is larger than the sum of its proper divisors (14457754441).

51552105143 is a wasteful number, since it uses less digits than its factorization.

51552105143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18094862.

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 51552105143 in words is "fifty-one billion, five hundred fifty-two million, one hundred five thousand, one hundred forty-three".

Divisors: 1 7 11 37 77 259 407 2849 18094807 126663649 199042877 669507859 1393300139 4686555013 7364586449 51552105143