80084561 has 2 divisors, whose sum is σ = 80084562. Its totient is φ = 80084560.

The previous prime is 80084531. The next prime is 80084611. The reversal of 80084561 is 16548008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48094225 + 31990336 = 6935^2 + 5656^2 .

It is a cyclic number.

It is not a de Polignac number, because 80084561 - 2¹⁸ = 79822417 is a prime.

It is not a weakly prime, because it can be changed into another prime (80084531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40042280 + 40042281.

It is an arithmetic number, because the mean of its divisors is an integer number (40042281).

Almost surely, 2^80084561 is an apocalyptic number.

It is an amenable number.

80084561 is a deficient number, since it is larger than the sum of its proper divisors (1).

80084561 is an equidigital number, since it uses as much as digits as its factorization.

80084561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 80084561 is about 8948.9977651131. The cubic root of 80084561 is about 431.0387021732.

The spelling of 80084561 in words is "eighty million, eighty-four thousand, five hundred sixty-one".