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215329 is a prime number
BaseRepresentation
bin110100100100100001
3101221101011
4310210201
523342304
64340521
71554532
oct644441
9357334
10215329
11137864
12a4741
137701a
1458689
1543c04
hex34921

215329 has 2 divisors, whose sum is σ = 215330. Its totient is φ = 215328.

The previous prime is 215317. The next prime is 215351. The reversal of 215329 is 923512.

It is an a-pointer prime, because the next prime (215351) can be obtained adding 215329 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204304 + 11025 = 452^2 + 105^2 .

It is a cyclic number.

It is not a de Polignac number, because 215329 - 25 = 215297 is a prime.

It is a Chen prime.

It is a nialpdrome in base 8.

It is not a weakly prime, because it can be changed into another prime (215309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107664 + 107665.

It is an arithmetic number, because the mean of its divisors is an integer number (107665).

2215329 is an apocalyptic number.

It is an amenable number.

215329 is a deficient number, since it is larger than the sum of its proper divisors (1).

215329 is an equidigital number, since it uses as much as digits as its factorization.

215329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 215329 is about 464.0355589823. The cubic root of 215329 is about 59.9378059243.

The spelling of 215329 in words is "two hundred fifteen thousand, three hundred twenty-nine".