82510973 has 2 divisors, whose sum is σ = 82510974. Its totient is φ = 82510972.

The previous prime is 82510943. The next prime is 82511021. The reversal of 82510973 is 37901528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78092569 + 4418404 = 8837^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 82510973 - 2⁸ = 82510717 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_4807385 and since 82510973 and 4807385 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82510943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41255486 + 41255487.

It is an arithmetic number, because the mean of its divisors is an integer number (41255487).

Almost surely, 2^82510973 is an apocalyptic number.

It is an amenable number.

82510973 is a deficient number, since it is larger than the sum of its proper divisors (1).

82510973 is an equidigital number, since it uses as much as digits as its factorization.

82510973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 82510973 is about 9083.5550859782. Note that the first 3 decimals coincide. The cubic root of 82510973 is about 435.3486841852.

The spelling of 82510973 in words is "eighty-two million, five hundred ten thousand, nine hundred seventy-three".