82071841 has 2 divisors, whose sum is σ = 82071842. Its totient is φ = 82071840.

The previous prime is 82071839. The next prime is 82071853. The reversal of 82071841 is 14817028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66830625 + 15241216 = 8175^2 + 3904^2 .

It is a cyclic number.

It is not a de Polignac number, because 82071841 - 2¹ = 82071839 is a prime.

Together with 82071839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82071881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41035920 + 41035921.

It is an arithmetic number, because the mean of its divisors is an integer number (41035921).

Almost surely, 2^82071841 is an apocalyptic number.

It is an amenable number.

82071841 is a deficient number, since it is larger than the sum of its proper divisors (1).

82071841 is an equidigital number, since it uses as much as digits as its factorization.

82071841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 82071841 is about 9059.3510253218. The cubic root of 82071841 is about 434.5749862966.

Adding to 82071841 its reverse (14817028), we get a palindrome (96888869).

The spelling of 82071841 in words is "eighty-two million, seventy-one thousand, eight hundred forty-one".