82976281 has 2 divisors, whose sum is σ = 82976282. Its totient is φ = 82976280.

The previous prime is 82976273. The next prime is 82976329. The reversal of 82976281 is 18267928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78481881 + 4494400 = 8859^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 82976281 - 2³ = 82976273 is a prime.

It is a super-2 number, since 2×82976281² = 13770126417181922, which contains 22 as substring.

It is equal to p_4832998 and since 82976281 and 4832998 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (82976381) 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 as a sum of consecutive naturals, namely, 41488140 + 41488141.

It is an arithmetic number, because the mean of its divisors is an integer number (41488141).

Almost surely, 2^82976281 is an apocalyptic number.

It is an amenable number.

82976281 is a deficient number, since it is larger than the sum of its proper divisors (1).

82976281 is an equidigital number, since it uses as much as digits as its factorization.

82976281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 43.

The square root of 82976281 is about 9109.1317368891. The cubic root of 82976281 is about 436.1655113979.

The spelling of 82976281 in words is "eighty-two million, nine hundred seventy-six thousand, two hundred eighty-one".