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52281871 = 293917789
BaseRepresentation
bin1100011101110…
…0001000001111
310122101012020121
43013130020033
5101341004441
65104325411
71203250165
oct307341017
9118335217
1052281871
112756a164
1215613867
13aaa6c25
146d2d235
1548cadd1
hex31dc20f

52281871 has 4 divisors (see below), whose sum is σ = 52302600. Its totient is φ = 52261144.

The previous prime is 52281839. The next prime is 52281881. The reversal of 52281871 is 17818225.

52281871 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.

It is a cyclic number.

It is not a de Polignac number, because 52281871 - 25 = 52281839 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 (52281881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5956 + ... + 11833.

It is an arithmetic number, because the mean of its divisors is an integer number (13075650).

Almost surely, 252281871 is an apocalyptic number.

52281871 is a deficient number, since it is larger than the sum of its proper divisors (20729).

52281871 is a wasteful number, since it uses less digits than its factorization.

52281871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20728.

The product of its digits is 8960, while the sum is 34.

The square root of 52281871 is about 7230.6203744907. The cubic root of 52281871 is about 373.9243152826.

The spelling of 52281871 in words is "fifty-two million, two hundred eighty-one thousand, eight hundred seventy-one".

Divisors: 1 2939 17789 52281871