80581289 has 4 divisors (see below), whose sum is σ = 80673024. Its totient is φ = 80489556.

The previous prime is 80581283. The next prime is 80581321. The reversal of 80581289 is 98218508.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80581289 - 2¹² = 80577193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80581283) 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 in 3 ways as a sum of consecutive naturals, for example, 44537 + ... + 46310.

It is an arithmetic number, because the mean of its divisors is an integer number (20168256).

Almost surely, 2^80581289 is an apocalyptic number.

It is an amenable number.

80581289 is a deficient number, since it is larger than the sum of its proper divisors (91735).

80581289 is an equidigital number, since it uses as much as digits as its factorization.

80581289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91734.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 80581289 is about 8976.7081382877. The cubic root of 80581289 is about 431.9280447857.

The spelling of 80581289 in words is "eighty million, five hundred eighty-one thousand, two hundred eighty-nine".