2291473 has 4 divisors (see below), whose sum is σ = 2299108. Its totient is φ = 2283840.

The previous prime is 2291459. The next prime is 2291477. The reversal of 2291473 is 3741922.

2291473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3741922 = 2 ⋅1870961.

It can be written as a sum of positive squares in 2 ways, for example, as 5329 + 2286144 = 73^2 + 1512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2291473 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 (2291477) 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 3 ways as a sum of consecutive naturals, for example, 3348 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (574777).

2^2291473 is an apocalyptic number.

It is an amenable number.

2291473 is a deficient number, since it is larger than the sum of its proper divisors (7635).

2291473 is an equidigital number, since it uses as much as digits as its factorization.

2291473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7634.

The product of its digits is 3024, while the sum is 28.

The square root of 2291473 is about 1513.7612097025. The cubic root of 2291473 is about 131.8372841988.

The spelling of 2291473 in words is "two million, two hundred ninety-one thousand, four hundred seventy-three".