82564211 has 2 divisors, whose sum is σ = 82564212. Its totient is φ = 82564210.

The previous prime is 82564147. The next prime is 82564219. The reversal of 82564211 is 11246528.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82564211 - 2⁶ = 82564147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82564219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41282105 + 41282106.

It is an arithmetic number, because the mean of its divisors is an integer number (41282106).

Almost surely, 2^82564211 is an apocalyptic number.

82564211 is a deficient number, since it is larger than the sum of its proper divisors (1).

82564211 is an equidigital number, since it uses as much as digits as its factorization.

82564211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 29.

The square root of 82564211 is about 9086.4850739986. The cubic root of 82564211 is about 435.4422964220.

The spelling of 82564211 in words is "eighty-two million, five hundred sixty-four thousand, two hundred eleven".