82271345 has 32 divisors (see below), whose sum is σ = 112154112. Its totient is φ = 57480192.

The previous prime is 82271339. The next prime is 82271351. The reversal of 82271345 is 54317228.

It is an interprime number because it is at equal distance from previous prime (82271339) and next prime (82271351).

It is a cyclic number.

It is not a de Polignac number, because 82271345 - 2⁶ = 82271281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168692 + ... + 169178.

It is an arithmetic number, because the mean of its divisors is an integer number (3504816).

Almost surely, 2^82271345 is an apocalyptic number.

It is an amenable number.

82271345 is a deficient number, since it is larger than the sum of its proper divisors (29882767).

82271345 is a wasteful number, since it uses less digits than its factorization.

82271345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 13440, while the sum is 32.

The square root of 82271345 is about 9070.3552852135. The cubic root of 82271345 is about 434.9268296359.

The spelling of 82271345 in words is "eighty-two million, two hundred seventy-one thousand, three hundred forty-five".