82168575 has 12 divisors (see below), whose sum is σ = 135852168. Its totient is φ = 43823200.

The previous prime is 82168573. The next prime is 82168577. The reversal of 82168575 is 57586128.

It is an interprime number because it is at equal distance from previous prime (82168573) and next prime (82168577).

It is not a de Polignac number, because 82168575 - 2¹ = 82168573 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82168573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547716 + ... + 547865.

It is an arithmetic number, because the mean of its divisors is an integer number (11321014).

Almost surely, 2^82168575 is an apocalyptic number.

82168575 is a deficient number, since it is larger than the sum of its proper divisors (53683593).

82168575 is a wasteful number, since it uses less digits than its factorization.

82168575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095594 (or 1095589 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 82168575 is about 9064.6883564743. The cubic root of 82168575 is about 434.7456565733.

It can be divided in two parts, 821 and 68575, that added together give a palindrome (69396).

The spelling of 82168575 in words is "eighty-two million, one hundred sixty-eight thousand, five hundred seventy-five".