82566523 has 4 divisors (see below), whose sum is σ = 88917808. Its totient is φ = 76215240.

The previous prime is 82566503. The next prime is 82566529. The reversal of 82566523 is 32566528.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82566523 - 2²⁵ = 49012091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82566529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3175623 + ... + 3175648.

It is an arithmetic number, because the mean of its divisors is an integer number (22229452).

Almost surely, 2^82566523 is an apocalyptic number.

82566523 is a deficient number, since it is larger than the sum of its proper divisors (6351285).

82566523 is a wasteful number, since it uses less digits than its factorization.

82566523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351284.

The product of its digits is 86400, while the sum is 37.

The square root of 82566523 is about 9086.6122950195. The cubic root of 82566523 is about 435.4463608675.

The spelling of 82566523 in words is "eighty-two million, five hundred sixty-six thousand, five hundred twenty-three".