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BaseRepresentation
bin101010000001000001
322202001222
4222001001
521001342
63404425
71314512
oct520101
9282058
10172097
11108332
1283715
1360443
1446a09
1535ed2
hex2a041

172097 has 2 divisors, whose sum is σ = 172098. Its totient is φ = 172096.

The previous prime is 172093. The next prime is 172127. The reversal of 172097 is 790271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132496 + 39601 = 364^2 + 199^2 .

It is an emirp because it is prime and its reverse (790271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172097 - 22 = 172093 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86048 + 86049.

It is an arithmetic number, because the mean of its divisors is an integer number (86049).

2172097 is an apocalyptic number.

It is an amenable number.

172097 is a deficient number, since it is larger than the sum of its proper divisors (1).

172097 is an equidigital number, since it uses as much as digits as its factorization.

172097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 172097 is about 414.8457544679. The cubic root of 172097 is about 55.6234300782.

The spelling of 172097 in words is "one hundred seventy-two thousand, ninety-seven".