82788571 has 2 divisors, whose sum is σ = 82788572. Its totient is φ = 82788570.

The previous prime is 82788551. The next prime is 82788611. The reversal of 82788571 is 17588728.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82788571 - 2¹⁷ = 82657499 is a prime.

It is not a weakly prime, because it can be changed into another prime (82788551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41394285 + 41394286.

It is an arithmetic number, because the mean of its divisors is an integer number (41394286).

Almost surely, 2^82788571 is an apocalyptic number.

82788571 is a deficient number, since it is larger than the sum of its proper divisors (1).

82788571 is an equidigital number, since it uses as much as digits as its factorization.

82788571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 46.

The square root of 82788571 is about 9098.8225062367. The cubic root of 82788571 is about 435.8363633465.

It can be divided in two parts, 827 and 88571, that added together give a palindrome (89398).

The spelling of 82788571 in words is "eighty-two million, seven hundred eighty-eight thousand, five hundred seventy-one".