82173361 has 2 divisors, whose sum is σ = 82173362. Its totient is φ = 82173360.

The previous prime is 82173241. The next prime is 82173367. The reversal of 82173361 is 16337128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68807025 + 13366336 = 8295^2 + 3656^2 .

It is a cyclic number.

It is not a de Polignac number, because 82173361 - 2²¹ = 80076209 is a prime.

It is a super-2 number, since 2×82173361² = 13504922516072642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82173367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41086680 + 41086681.

It is an arithmetic number, because the mean of its divisors is an integer number (41086681).

Almost surely, 2^82173361 is an apocalyptic number.

It is an amenable number.

82173361 is a deficient number, since it is larger than the sum of its proper divisors (1).

82173361 is an equidigital number, since it uses as much as digits as its factorization.

82173361 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 82173361 is about 9064.9523440556. The cubic root of 82173361 is about 434.7540971575.

The spelling of 82173361 in words is "eighty-two million, one hundred seventy-three thousand, three hundred sixty-one".