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52086881 = 7112329411
BaseRepresentation
bin1100011010110…
…0100001100001
310122000021202202
43012230201201
5101313240011
65100222545
71201505540
oct306544141
9118007682
1052086881
1127446710
121553aa55
13aa39252
146cbc157
15488d23b
hex31ac861

52086881 has 16 divisors (see below), whose sum is σ = 67765248. Its totient is φ = 38821200.

The previous prime is 52086877. The next prime is 52086883. The reversal of 52086881 is 18868025.

It is not a de Polignac number, because 52086881 - 22 = 52086877 is a prime.

It is a super-2 number, since 2×520868812 = 5426086344616322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52086883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12935 + ... + 16476.

It is an arithmetic number, because the mean of its divisors is an integer number (4235328).

Almost surely, 252086881 is an apocalyptic number.

It is an amenable number.

52086881 is a deficient number, since it is larger than the sum of its proper divisors (15678367).

52086881 is a wasteful number, since it uses less digits than its factorization.

52086881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 52086881 is about 7217.1241502416. The cubic root of 52086881 is about 373.4588745700.

The spelling of 52086881 in words is "fifty-two million, eighty-six thousand, eight hundred eighty-one".

Divisors: 1 7 11 23 77 161 253 1771 29411 205877 323521 676453 2264647 4735171 7440983 52086881