82182161 has 2 divisors, whose sum is σ = 82182162. Its totient is φ = 82182160.

The previous prime is 82182137. The next prime is 82182167. The reversal of 82182161 is 16128128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78499600 + 3682561 = 8860^2 + 1919^2 .

It is a cyclic number.

It is not a de Polignac number, because 82182161 - 2²⁶ = 15073297 is a prime.

It is not a weakly prime, because it can be changed into another prime (82182167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41091080 + 41091081.

It is an arithmetic number, because the mean of its divisors is an integer number (41091081).

Almost surely, 2^82182161 is an apocalyptic number.

It is an amenable number.

82182161 is a deficient number, since it is larger than the sum of its proper divisors (1).

82182161 is an equidigital number, since it uses as much as digits as its factorization.

82182161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 29.

The square root of 82182161 is about 9065.4377169555. The cubic root of 82182161 is about 434.7696159722.

The spelling of 82182161 in words is "eighty-two million, one hundred eighty-two thousand, one hundred sixty-one".