2581489 has 8 divisors (see below), whose sum is σ = 2650752. Its totient is φ = 2513280.

The previous prime is 2581487. The next prime is 2581507. The reversal of 2581489 is 9841852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2581489 - 2¹ = 2581487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2581487) 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 7 ways as a sum of consecutive naturals, for example, 7137 + ... + 7489.

It is an arithmetic number, because the mean of its divisors is an integer number (331344).

2^2581489 is an apocalyptic number.

It is an amenable number.

2581489 is a deficient number, since it is larger than the sum of its proper divisors (69263).

2581489 is a wasteful number, since it uses less digits than its factorization.

2581489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its digits is 23040, while the sum is 37.

The square root of 2581489 is about 1606.7012790186. The cubic root of 2581489 is about 137.1797771280.

The spelling of 2581489 in words is "two million, five hundred eighty-one thousand, four hundred eighty-nine".