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57112143 = 3111730671
BaseRepresentation
bin1101100111011…
…1011001001111
310222110121010120
43121313121033
5104110042033
65400040023
71262305464
oct331673117
9128417116
1057112143
112a269220
1217163013
13baa868a
14782966b
1550321b3
hex367764f

57112143 has 8 divisors (see below), whose sum is σ = 83072256. Its totient is φ = 34613400.

The previous prime is 57112141. The next prime is 57112169. The reversal of 57112143 is 34121175.

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

It is not a de Polignac number, because 57112143 - 21 = 57112141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57112141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865303 + ... + 865368.

It is an arithmetic number, because the mean of its divisors is an integer number (10384032).

Almost surely, 257112143 is an apocalyptic number.

57112143 is a deficient number, since it is larger than the sum of its proper divisors (25960113).

57112143 is a wasteful number, since it uses less digits than its factorization.

57112143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730685.

The product of its digits is 840, while the sum is 24.

The square root of 57112143 is about 7557.2576375296. The cubic root of 57112143 is about 385.1023351958.

The spelling of 57112143 in words is "fifty-seven million, one hundred twelve thousand, one hundred forty-three".

Divisors: 1 3 11 33 1730671 5192013 19037381 57112143