82715522 has 18 divisors (see below), whose sum is σ = 127380393. Its totient is φ = 40283784.

The previous prime is 82715513. The next prime is 82715527. The reversal of 82715522 is 22551728.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79370281 + 3345241 = 8909^2 + 1829^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6431.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82715527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 758804 + ... + 758912.

Almost surely, 2^82715522 is an apocalyptic number.

82715522 is a deficient number, since it is larger than the sum of its proper divisors (44664871).

82715522 is an equidigital number, since it uses as much as digits as its factorization.

82715522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 170 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 82715522 is about 9094.8074196214. The cubic root of 82715522 is about 435.7081380021.

Multiplying 82715522 by its sum of digits (32), we get a square (2646896704 = 51448²).

The spelling of 82715522 in words is "eighty-two million, seven hundred fifteen thousand, five hundred twenty-two".