82000531 has 4 divisors (see below), whose sum is σ = 83344864. Its totient is φ = 80656200.

The previous prime is 82000519. The next prime is 82000553. The reversal of 82000531 is 13500028.

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 82000531 - 2⁷ = 82000403 is a prime.

It is a super-2 number, since 2×82000531² = 13448174168563922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82000499 and 82000508.

It is not an unprimeable number, because it can be changed into a prime (82000031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 672075 + ... + 672196.

It is an arithmetic number, because the mean of its divisors is an integer number (20836216).

Almost surely, 2^82000531 is an apocalyptic number.

82000531 is a deficient number, since it is larger than the sum of its proper divisors (1344333).

82000531 is a wasteful number, since it uses less digits than its factorization.

82000531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344332.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 82000531 is about 9055.4144576601. The cubic root of 82000531 is about 434.4490863471.

Adding to 82000531 its reverse (13500028), we get a palindrome (95500559).

The spelling of 82000531 in words is "eighty-two million, five hundred thirty-one", and thus it is an aban number.