82210841 has 2 divisors, whose sum is σ = 82210842. Its totient is φ = 82210840.

The previous prime is 82210837. The next prime is 82210847. The reversal of 82210841 is 14801228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54700816 + 27510025 = 7396^2 + 5245^2 .

It is a cyclic number.

It is not a de Polignac number, because 82210841 - 2² = 82210837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 82210841.

It is not a weakly prime, because it can be changed into another prime (82210847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41105420 + 41105421.

It is an arithmetic number, because the mean of its divisors is an integer number (41105421).

Almost surely, 2^82210841 is an apocalyptic number.

It is an amenable number.

82210841 is a deficient number, since it is larger than the sum of its proper divisors (1).

82210841 is an equidigital number, since it uses as much as digits as its factorization.

82210841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 82210841 is about 9067.0194110303. The cubic root of 82210841 is about 434.8201855127.

The spelling of 82210841 in words is "eighty-two million, two hundred ten thousand, eight hundred forty-one".