82573081 has 2 divisors, whose sum is σ = 82573082. Its totient is φ = 82573080.

The previous prime is 82573079. The next prime is 82573087. The reversal of 82573081 is 18037528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61089856 + 21483225 = 7816^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 82573081 - 2¹ = 82573079 is a prime.

It is a super-2 number, since 2×82573081² = 13636627411665122, which contains 22 as substring.

Together with 82573079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82573087) 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 as a sum of consecutive naturals, namely, 41286540 + 41286541.

It is an arithmetic number, because the mean of its divisors is an integer number (41286541).

Almost surely, 2^82573081 is an apocalyptic number.

It is an amenable number.

82573081 is a deficient number, since it is larger than the sum of its proper divisors (1).

82573081 is an equidigital number, since it uses as much as digits as its factorization.

82573081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 82573081 is about 9086.9731484142. The cubic root of 82573081 is about 435.4578892752.

The spelling of 82573081 in words is "eighty-two million, five hundred seventy-three thousand, eighty-one".