82540489 has 2 divisors, whose sum is σ = 82540490. Its totient is φ = 82540488.

The previous prime is 82540453. The next prime is 82540499. The reversal of 82540489 is 98404528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79512889 + 3027600 = 8917^2 + 1740^2 .

It is a cyclic number.

It is not a de Polignac number, because 82540489 - 2⁷ = 82540361 is a prime.

It is not a weakly prime, because it can be changed into another prime (82540499) 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, 41270244 + 41270245.

It is an arithmetic number, because the mean of its divisors is an integer number (41270245).

Almost surely, 2^82540489 is an apocalyptic number.

It is an amenable number.

82540489 is a deficient number, since it is larger than the sum of its proper divisors (1).

82540489 is an equidigital number, since it uses as much as digits as its factorization.

82540489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 82540489 is about 9085.1796349880. The cubic root of 82540489 is about 435.4005892809.

It can be divided in two parts, 825 and 40489, that added together give a palindrome (41314).

The spelling of 82540489 in words is "eighty-two million, five hundred forty thousand, four hundred eighty-nine".