82201571 has 2 divisors, whose sum is σ = 82201572. Its totient is φ = 82201570.

The previous prime is 82201549. The next prime is 82201601. The reversal of 82201571 is 17510228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82201571 - 2¹⁸ = 81939427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82201571.

It is not a weakly prime, because it can be changed into another prime (82201541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41100785 + 41100786.

It is an arithmetic number, because the mean of its divisors is an integer number (41100786).

Almost surely, 2^82201571 is an apocalyptic number.

82201571 is a deficient number, since it is larger than the sum of its proper divisors (1).

82201571 is an equidigital number, since it uses as much as digits as its factorization.

82201571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 82201571 is about 9066.5082032721. The cubic root of 82201571 is about 434.8038416235.

Adding to 82201571 its reverse (17510228), we get a palindrome (99711799).

The spelling of 82201571 in words is "eighty-two million, two hundred one thousand, five hundred seventy-one".