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52885121871 = 361392973553
BaseRepresentation
bin110001010000001100…
…101110101101001111
312001111122200112210110
4301100030232231033
51331302042344441
640143423411103
73551354055531
oct612014565517
9161448615713
1052885121871
11204792aa89a
12a2bb153a93
134caa70172a
1427b9991851
151597ce5b16
hexc5032eb4f

52885121871 has 16 divisors (see below), whose sum is σ = 71688670560. Its totient is φ = 34669470720.

The previous prime is 52885121867. The next prime is 52885121879. The reversal of 52885121871 is 17812158825.

It is a happy number.

52885121871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52885121871 - 22 = 52885121867 is a prime.

It is a super-2 number, since 2×528851218712 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52885121871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52885121879) 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, 682231 + ... + 755783.

It is an arithmetic number, because the mean of its divisors is an integer number (4480541910).

Almost surely, 252885121871 is an apocalyptic number.

52885121871 is a deficient number, since it is larger than the sum of its proper divisors (18803548689).

52885121871 is a wasteful number, since it uses less digits than its factorization.

52885121871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77546.

The product of its digits is 358400, while the sum is 48.

The spelling of 52885121871 in words is "fifty-two billion, eight hundred eighty-five million, one hundred twenty-one thousand, eight hundred seventy-one".

Divisors: 1 3 61 183 3929 11787 73553 220659 239669 719007 4486733 13460199 288989737 866969211 17628373957 52885121871