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52000085 = 510995413
BaseRepresentation
bin1100011001011…
…1010101010101
310121211212201002
43012113111111
5101303000320
65054313045
71200664514
oct306272525
9117755632
1052000085
1127397485
12154b8785
13aa088a7
146c9867b
154872675
hex3197555

52000085 has 8 divisors (see below), whose sum is σ = 62973240. Its totient is φ = 41217984.

The previous prime is 52000061. The next prime is 52000087. The reversal of 52000085 is 58000025.

It can be written as a sum of positive squares in 4 ways, for example, as 3530641 + 48469444 = 1879^2 + 6962^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 52000085 - 216 = 51934549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52000087) 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, 47162 + ... + 48251.

It is an arithmetic number, because the mean of its divisors is an integer number (7871655).

Almost surely, 252000085 is an apocalyptic number.

It is an amenable number.

52000085 is a deficient number, since it is larger than the sum of its proper divisors (10973155).

52000085 is a wasteful number, since it uses less digits than its factorization.

52000085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95527.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 52000085 is about 7211.1084446152. The cubic root of 52000085 is about 373.2513190556.

The spelling of 52000085 in words is "fifty-two million, eighty-five", and thus it is an aban number and an uban number.

Divisors: 1 5 109 545 95413 477065 10400017 52000085