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57881641 = 793831913
BaseRepresentation
bin1101110011001…
…1010000101001
311000220200200111
43130303100221
5104304203031
65424334321
71301662066
oct334632051
9130820614
1057881641
112a744374
12174743a1
13bcb79bc
147989c6d
1551351b1
hex3733429

57881641 has 8 divisors (see below), whose sum is σ = 58798080. Its totient is φ = 56969952.

The previous prime is 57881633. The next prime is 57881669. The reversal of 57881641 is 14618875.

57881641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57881641 - 23 = 57881633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57881594 and 57881603.

It is not an unprimeable number, because it can be changed into a prime (57881611) 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 7 ways as a sum of consecutive naturals, for example, 29301 + ... + 31213.

It is an arithmetic number, because the mean of its divisors is an integer number (7349760).

Almost surely, 257881641 is an apocalyptic number.

It is an amenable number.

57881641 is a deficient number, since it is larger than the sum of its proper divisors (916439).

57881641 is a wasteful number, since it uses less digits than its factorization.

57881641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375.

The product of its digits is 53760, while the sum is 40.

The square root of 57881641 is about 7607.9984884331. The cubic root of 57881641 is about 386.8241783795.

The spelling of 57881641 in words is "fifty-seven million, eight hundred eighty-one thousand, six hundred forty-one".

Divisors: 1 79 383 1913 30257 151127 732679 57881641