82540071 has 6 divisors (see below), whose sum is σ = 119224560. Its totient is φ = 55026708.

The previous prime is 82540039. The next prime is 82540079. The reversal of 82540071 is 17004528.

It is not a de Polignac number, because 82540071 - 2⁵ = 82540039 is a prime.

It is a super-3 number, since 3×82540071³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82540079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4585551 + ... + 4585568.

It is an arithmetic number, because the mean of its divisors is an integer number (19870760).

Almost surely, 2^82540071 is an apocalyptic number.

82540071 is a deficient number, since it is larger than the sum of its proper divisors (36684489).

82540071 is a wasteful number, since it uses less digits than its factorization.

82540071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171125 (or 9171122 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 82540071 is about 9085.1566304605. The cubic root of 82540071 is about 435.3998542972.

Adding to 82540071 its reverse (17004528), we get a palindrome (99544599).

The spelling of 82540071 in words is "eighty-two million, five hundred forty thousand, seventy-one".