80582521 has 2 divisors, whose sum is σ = 80582522. Its totient is φ = 80582520.

The previous prime is 80582519. The next prime is 80582527. The reversal of 80582521 is 12528508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75012921 + 5569600 = 8661^2 + 2360^2 .

It is a cyclic number.

It is not a de Polignac number, because 80582521 - 2¹ = 80582519 is a prime.

Together with 80582519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80582527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40291260 + 40291261.

It is an arithmetic number, because the mean of its divisors is an integer number (40291261).

Almost surely, 2^80582521 is an apocalyptic number.

It is an amenable number.

80582521 is a deficient number, since it is larger than the sum of its proper divisors (1).

80582521 is an equidigital number, since it uses as much as digits as its factorization.

80582521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 80582521 is about 8976.7767600626. The cubic root of 80582521 is about 431.9302460107.

The spelling of 80582521 in words is "eighty million, five hundred eighty-two thousand, five hundred twenty-one".