859321 has 2 divisors, whose sum is σ = 859322. Its totient is φ = 859320.
The previous prime is 859297. The next prime is 859361. The reversal of 859321 is 123958.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 583696 + 275625 = 764^2 + 525^2 .
It is a cyclic number.
It is not a de Polignac number, because 859321 - 211 = 857273 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 859321.
It is not a weakly prime, because it can be changed into another prime (859361) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429660 + 429661.
It is an arithmetic number, because the mean of its divisors is an integer number (429661).
2859321 is an apocalyptic number.
859321 is the 496-th centered heptagonal number.
It is an amenable number.
859321 is a deficient number, since it is larger than the sum of its proper divisors (1).
859321 is an equidigital number, since it uses as much as digits as its factorization.
859321 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 2160, while the sum is 28.
The square root of 859321 is about 926.9956849954. The cubic root of 859321 is about 95.0718201131.
The spelling of 859321 in words is "eight hundred fifty-nine thousand, three hundred twenty-one".
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