82251271 has 2 divisors, whose sum is σ = 82251272. Its totient is φ = 82251270.

The previous prime is 82251233. The next prime is 82251311. The reversal of 82251271 is 17215228.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82251271 - 2¹³ = 82243079 is a prime.

It is a super-2 number, since 2×82251271² = 13530543162230882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82251571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41125635 + 41125636.

It is an arithmetic number, because the mean of its divisors is an integer number (41125636).

Almost surely, 2^82251271 is an apocalyptic number.

82251271 is a deficient number, since it is larger than the sum of its proper divisors (1).

82251271 is an equidigital number, since it uses as much as digits as its factorization.

82251271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 28.

The square root of 82251271 is about 9069.2486458361. The cubic root of 82251271 is about 434.8914530765.

Adding to 82251271 its reverse (17215228), we get a palindrome (99466499).

The spelling of 82251271 in words is "eighty-two million, two hundred fifty-one thousand, two hundred seventy-one".