82163173 has 2 divisors, whose sum is σ = 82163174. Its totient is φ = 82163172.

The previous prime is 82163167. The next prime is 82163209. The reversal of 82163173 is 37136128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 34304449 = 6918^2 + 5857^2 .

It is a cyclic number.

It is not a de Polignac number, because 82163173 - 2¹³ = 82154981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82163773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41081586 + 41081587.

It is an arithmetic number, because the mean of its divisors is an integer number (41081587).

Almost surely, 2^82163173 is an apocalyptic number.

It is an amenable number.

82163173 is a deficient number, since it is larger than the sum of its proper divisors (1).

82163173 is an equidigital number, since it uses as much as digits as its factorization.

82163173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 82163173 is about 9064.3903821493. The cubic root of 82163173 is about 434.7361292185.

The spelling of 82163173 in words is "eighty-two million, one hundred sixty-three thousand, one hundred seventy-three".