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57885 = 3517227
BaseRepresentation
bin1110001000011101
32221101220
432020131
53323020
61123553
7330522
oct161035
987356
1057885
113a543
12295b9
1320469
1417149
1512240
hexe21d

57885 has 16 divisors (see below), whose sum is σ = 98496. Its totient is φ = 28928.

The previous prime is 57881. The next prime is 57899. The reversal of 57885 is 58875.

57885 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 57885 - 22 = 57881 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57881) 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, 142 + ... + 368.

It is an arithmetic number, because the mean of its divisors is an integer number (6156).

257885 is an apocalyptic number.

It is an amenable number.

57885 is a deficient number, since it is larger than the sum of its proper divisors (40611).

57885 is a wasteful number, since it uses less digits than its factorization.

57885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

The product of its digits is 11200, while the sum is 33.

The square root of 57885 is about 240.5930173550. The cubic root of 57885 is about 38.6831660990.

Subtracting 57885 from its reverse (58875), we obtain a triangular number (990 = T44).

The spelling of 57885 in words is "fifty-seven thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 17 51 85 227 255 681 1135 3405 3859 11577 19295 57885