2281859 has 4 divisors (see below), whose sum is σ = 2416104. Its totient is φ = 2147616.

The previous prime is 2281831. The next prime is 2281861. The reversal of 2281859 is 9581822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9581822 = 2 ⋅4790911.

It is a cyclic number.

It is not a de Polignac number, because 2281859 - 2¹⁶ = 2216323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2284859) 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, 67097 + ... + 67130.

It is an arithmetic number, because the mean of its divisors is an integer number (604026).

2^2281859 is an apocalyptic number.

2281859 is a deficient number, since it is larger than the sum of its proper divisors (134245).

2281859 is a wasteful number, since it uses less digits than its factorization.

2281859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134244.

The product of its digits is 11520, while the sum is 35.

The square root of 2281859 is about 1510.5823380405. The cubic root of 2281859 is about 131.6526489020.

The spelling of 2281859 in words is "two million, two hundred eighty-one thousand, eight hundred fifty-nine".