82612291 has 2 divisors, whose sum is σ = 82612292. Its totient is φ = 82612290.

The previous prime is 82612267. The next prime is 82612339. The reversal of 82612291 is 19221628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82612291 - 2¹¹ = 82610243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82612261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41306145 + 41306146.

It is an arithmetic number, because the mean of its divisors is an integer number (41306146).

Almost surely, 2^82612291 is an apocalyptic number.

82612291 is a deficient number, since it is larger than the sum of its proper divisors (1).

82612291 is an equidigital number, since it uses as much as digits as its factorization.

82612291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 82612291 is about 9089.1303764442. The cubic root of 82612291 is about 435.5268043977.

The spelling of 82612291 in words is "eighty-two million, six hundred twelve thousand, two hundred ninety-one".