5815489 has 2 divisors, whose sum is σ = 5815490. Its totient is φ = 5815488.

The previous prime is 5815487. The next prime is 5815517. The reversal of 5815489 is 9845185.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 339889 = 2340^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 5815489 - 2¹ = 5815487 is a prime.

Together with 5815487, it forms a pair of twin primes.

5815489 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (5815487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2907744 + 2907745.

It is an arithmetic number, because the mean of its divisors is an integer number (2907745).

Almost surely, 2^5815489 is an apocalyptic number.

It is an amenable number.

5815489 is a deficient number, since it is larger than the sum of its proper divisors (1).

5815489 is an equidigital number, since it uses as much as digits as its factorization.

5815489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 40.

The square root of 5815489 is about 2411.5325002993. The cubic root of 5815489 is about 179.8299731892.

The spelling of 5815489 in words is "five million, eight hundred fifteen thousand, four hundred eighty-nine".