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BaseRepresentation
bin10100001000011001
311012002222
4110020121
510114312
61433425
7462254
oct241031
9135088
1082457
1156a51
123b875
132b6bb
142209b
1519672
hex14219

82457 has 2 divisors, whose sum is σ = 82458. Its totient is φ = 82456.

The previous prime is 82421. The next prime is 82463. The reversal of 82457 is 75428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67081 + 15376 = 259^2 + 124^2 .

It is a cyclic number.

It is not a de Polignac number, because 82457 - 26 = 82393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41228 + 41229.

It is an arithmetic number, because the mean of its divisors is an integer number (41229).

282457 is an apocalyptic number.

It is an amenable number.

82457 is a deficient number, since it is larger than the sum of its proper divisors (1).

82457 is an equidigital number, since it uses as much as digits as its factorization.

82457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 82457 is about 287.1532691787. The cubic root of 82457 is about 43.5253738431.

The spelling of 82457 in words is "eighty-two thousand, four hundred fifty-seven".