82581167 has 2 divisors, whose sum is σ = 82581168. Its totient is φ = 82581166.

The previous prime is 82581157. The next prime is 82581197. The reversal of 82581167 is 76118528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82581167 - 2²⁴ = 65803951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82581167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82581127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41290583 + 41290584.

It is an arithmetic number, because the mean of its divisors is an integer number (41290584).

Almost surely, 2^82581167 is an apocalyptic number.

82581167 is a deficient number, since it is larger than the sum of its proper divisors (1).

82581167 is an equidigital number, since it uses as much as digits as its factorization.

82581167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 38.

The square root of 82581167 is about 9087.4180601533. The cubic root of 82581167 is about 435.4721029371.

The spelling of 82581167 in words is "eighty-two million, five hundred eighty-one thousand, one hundred sixty-seven".