82354971 has 4 divisors (see below), whose sum is σ = 109806632. Its totient is φ = 54903312.

The previous prime is 82354969. The next prime is 82354997. The reversal of 82354971 is 17945328.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82354971 - 2¹ = 82354969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82354901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13725826 + ... + 13725831.

It is an arithmetic number, because the mean of its divisors is an integer number (27451658).

Almost surely, 2^82354971 is an apocalyptic number.

82354971 is a deficient number, since it is larger than the sum of its proper divisors (27451661).

82354971 is a wasteful number, since it uses less digits than its factorization.

82354971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27451660.

The product of its digits is 60480, while the sum is 39.

The square root of 82354971 is about 9074.9639668706. The cubic root of 82354971 is about 435.0741424686.

The spelling of 82354971 in words is "eighty-two million, three hundred fifty-four thousand, nine hundred seventy-one".