82243271 has 4 divisors (see below), whose sum is σ = 89719944. Its totient is φ = 74766600.

The previous prime is 82243243. The next prime is 82243277. The reversal of 82243271 is 17234228.

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 82243271 - 2¹⁴ = 82226887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82243277) 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 3 ways as a sum of consecutive naturals, for example, 3738320 + ... + 3738341.

It is an arithmetic number, because the mean of its divisors is an integer number (22429986).

Almost surely, 2^82243271 is an apocalyptic number.

82243271 is a deficient number, since it is larger than the sum of its proper divisors (7476673).

82243271 is a wasteful number, since it uses less digits than its factorization.

82243271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476672.

The product of its digits is 5376, while the sum is 29.

The square root of 82243271 is about 9068.8075842417. The cubic root of 82243271 is about 434.8773530130.

Adding to 82243271 its reverse (17234228), we get a palindrome (99477499).

The spelling of 82243271 in words is "eighty-two million, two hundred forty-three thousand, two hundred seventy-one".