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57160239 = 3175232143
BaseRepresentation
bin1101101000001…
…1001000101111
310222120001002220
43122003020233
5104113111424
65401050423
71262565633
oct332031057
9128501086
1057160239
112a2a1374
1217186a13
13bac4536
14783cdc3
155041579
hex368322f

57160239 has 16 divisors (see below), whose sum is σ = 80888832. Its totient is φ = 35779968.

The previous prime is 57160237. The next prime is 57160261. The reversal of 57160239 is 93206175.

57160239 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 57160239 - 21 = 57160237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57160237) 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 15 ways as a sum of consecutive naturals, for example, 25602 + ... + 27744.

It is an arithmetic number, because the mean of its divisors is an integer number (5055552).

Almost surely, 257160239 is an apocalyptic number.

57160239 is a deficient number, since it is larger than the sum of its proper divisors (23728593).

57160239 is a wasteful number, since it uses less digits than its factorization.

57160239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 57160239 is about 7560.4390745512. The cubic root of 57160239 is about 385.2104072804.

The spelling of 57160239 in words is "fifty-seven million, one hundred sixty thousand, two hundred thirty-nine".

Divisors: 1 3 17 51 523 1569 2143 6429 8891 26673 36431 109293 1120789 3362367 19053413 57160239