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57850857 = 3259108947
BaseRepresentation
bin1101110010101…
…1101111101001
311000212010110100
43130223233221
5104302211412
65423540013
71301503251
oct334535751
9130763410
1057850857
112a723229
121745a609
13bca699c
14797c961
15512aedc
hex372bbe9

57850857 has 12 divisors (see below), whose sum is σ = 84979440. Its totient is φ = 37913208.

The previous prime is 57850817. The next prime is 57850879. The reversal of 57850857 is 75805875.

It is a happy number.

It is not a de Polignac number, because 57850857 - 28 = 57850601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57850817) 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 11 ways as a sum of consecutive naturals, for example, 53943 + ... + 55004.

It is an arithmetic number, because the mean of its divisors is an integer number (7081620).

Almost surely, 257850857 is an apocalyptic number.

It is an amenable number.

57850857 is a deficient number, since it is larger than the sum of its proper divisors (27128583).

57850857 is a wasteful number, since it uses less digits than its factorization.

57850857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109012 (or 109009 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 45.

The square root of 57850857 is about 7605.9750854180. The cubic root of 57850857 is about 386.7555895202.

The spelling of 57850857 in words is "fifty-seven million, eight hundred fifty thousand, eight hundred fifty-seven".

Divisors: 1 3 9 59 177 531 108947 326841 980523 6427873 19283619 57850857