2581284859 has 4 divisors (see below), whose sum is σ = 2582393616. Its totient is φ = 2580176104.

The previous prime is 2581284851. The next prime is 2581284887. The reversal of 2581284859 is 9584821852.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2581284859 - 2³ = 2581284851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2581284851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550879 + ... + 555544.

It is an arithmetic number, because the mean of its divisors is an integer number (645598404).

Almost surely, 2^2581284859 is an apocalyptic number.

2581284859 is a deficient number, since it is larger than the sum of its proper divisors (1108757).

2581284859 is a wasteful number, since it uses less digits than its factorization.

2581284859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108756.

The product of its digits is 1843200, while the sum is 52.

The square root of 2581284859 is about 50806.3466409463. The cubic root of 2581284859 is about 1371.7616102954.

The spelling of 2581284859 in words is "two billion, five hundred eighty-one million, two hundred eighty-four thousand, eight hundred fifty-nine".