82552809 has 16 divisors (see below), whose sum is σ = 113422400. Its totient is φ = 53369280.

The previous prime is 82552801. The next prime is 82552829. The reversal of 82552809 is 90825528.

It is not a de Polignac number, because 82552809 - 2³ = 82552801 is a prime.

It is a super-3 number, since 3×82552809³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82552801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37674 + ... + 39804.

It is an arithmetic number, because the mean of its divisors is an integer number (7088900).

Almost surely, 2^82552809 is an apocalyptic number.

It is an amenable number.

82552809 is a deficient number, since it is larger than the sum of its proper divisors (30869591).

82552809 is a wasteful number, since it uses less digits than its factorization.

82552809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 82552809 is about 9085.8576370093. The cubic root of 82552809 is about 435.4222508455.

The spelling of 82552809 in words is "eighty-two million, five hundred fifty-two thousand, eight hundred nine".