2281591 has 8 divisors (see below), whose sum is σ = 2469600. Its totient is φ = 2095392.

The previous prime is 2281579. The next prime is 2281607. The reversal of 2281591 is 1951822.

2281591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2281591 - 2⁹ = 2281079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281571) 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 in 7 ways as a sum of consecutive naturals, for example, 3510 + ... + 4108.

It is an arithmetic number, because the mean of its divisors is an integer number (308700).

2^2281591 is an apocalyptic number.

2281591 is a deficient number, since it is larger than the sum of its proper divisors (188009).

2281591 is a wasteful number, since it uses less digits than its factorization.

2281591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905.

The product of its digits is 1440, while the sum is 28.

The square root of 2281591 is about 1510.4936279243. The cubic root of 2281591 is about 131.6474945825.

The spelling of 2281591 in words is "two million, two hundred eighty-one thousand, five hundred ninety-one".