82145799 has 8 divisors (see below), whose sum is σ = 121697520. Its totient is φ = 54763848.

The previous prime is 82145771. The next prime is 82145827. The reversal of 82145799 is 99754128.

It is an interprime number because it is at equal distance from previous prime (82145771) and next prime (82145827).

It is not a de Polignac number, because 82145799 - 2⁷ = 82145671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82145299) 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 in 7 ways as a sum of consecutive naturals, for example, 1521192 + ... + 1521245.

It is an arithmetic number, because the mean of its divisors is an integer number (15212190).

Almost surely, 2^82145799 is an apocalyptic number.

82145799 is a deficient number, since it is larger than the sum of its proper divisors (39551721).

82145799 is a wasteful number, since it uses less digits than its factorization.

82145799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042446 (or 3042440 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 82145799 is about 9063.4319658725. The cubic root of 82145799 is about 434.7054843538.

It can be divided in two parts, 82145 and 799, that added together give a square (82944 = 288²).

The spelling of 82145799 in words is "eighty-two million, one hundred forty-five thousand, seven hundred ninety-nine".