84481 has 2 divisors, whose sum is σ = 84482. Its totient is φ = 84480.

The previous prime is 84467. The next prime is 84499. The reversal of 84481 is 18448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50625 + 33856 = 225^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 84481 - 2⁵ = 84449 is a prime.

It is a super-2 number, since 2×84481² = 14274078722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42240 + 42241.

It is an arithmetic number, because the mean of its divisors is an integer number (42241).

It is a Proth number, since it is equal to 165 ⋅ 2⁹ + 1 and 165 < 2⁹.

2⁸⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

84481 is a deficient number, since it is larger than the sum of its proper divisors (1).

84481 is an equidigital number, since it uses as much as digits as its factorization.

84481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 25.

The square root of 84481 is about 290.6561542442. The cubic root of 84481 is about 43.8786255503.

It can be divided in two parts, 84 and 481, that multiplied together give a palindrome (40404).

The spelling of 84481 in words is "eighty-four thousand, four hundred eighty-one".