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57500287 = 134499851
BaseRepresentation
bin1101101101011…
…0001001111111
311000012022120021
43123112021333
5104210002122
65412233011
71265513215
oct333261177
9130168507
1057500287
112a5038a9
121730b767
13bbb3250
1478cacb5
1550ac1c7
hex36d627f

57500287 has 8 divisors (see below), whose sum is σ = 62067600. Its totient is φ = 52953600.

The previous prime is 57500263. The next prime is 57500321. The reversal of 57500287 is 78200575.

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

It is a cyclic number.

It is not a de Polignac number, because 57500287 - 211 = 57498239 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 (57500687) 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, 912 + ... + 10762.

It is an arithmetic number, because the mean of its divisors is an integer number (7758450).

Almost surely, 257500287 is an apocalyptic number.

57500287 is a deficient number, since it is larger than the sum of its proper divisors (4567313).

57500287 is a wasteful number, since it uses less digits than its factorization.

57500287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 57500287 is about 7582.8943682475. The cubic root of 57500287 is about 385.9727736351.

The spelling of 57500287 in words is "fifty-seven million, five hundred thousand, two hundred eighty-seven".

Divisors: 1 13 449 5837 9851 128063 4423099 57500287