82226581 has 2 divisors, whose sum is σ = 82226582. Its totient is φ = 82226580.

The previous prime is 82226563. The next prime is 82226647. The reversal of 82226581 is 18562228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82192356 + 34225 = 9066^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 82226581 - 2⁹ = 82226069 is a prime.

It is a super-2 number, since 2×82226581² = 13522421245899122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82226561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41113290 + 41113291.

It is an arithmetic number, because the mean of its divisors is an integer number (41113291).

Almost surely, 2^82226581 is an apocalyptic number.

It is an amenable number.

82226581 is a deficient number, since it is larger than the sum of its proper divisors (1).

82226581 is an equidigital number, since it uses as much as digits as its factorization.

82226581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 34.

The square root of 82226581 is about 9067.8873504251. The cubic root of 82226581 is about 434.8479338117.

The spelling of 82226581 in words is "eighty-two million, two hundred twenty-six thousand, five hundred eighty-one".