2287291 has 2 divisors, whose sum is σ = 2287292. Its totient is φ = 2287290.

The previous prime is 2287289. The next prime is 2287301. The reversal of 2287291 is 1927822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2287291 - 2¹ = 2287289 is a prime.

Together with 2287289, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2 + 2¹⁷ + 8 + 7 + 2²¹ + 9⁵ + 1 .

It is not a weakly prime, because it can be changed into another prime (2287261) 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 as a sum of consecutive naturals, namely, 1143645 + 1143646.

It is an arithmetic number, because the mean of its divisors is an integer number (1143646).

2^2287291 is an apocalyptic number.

2287291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2287291 is an equidigital number, since it uses as much as digits as its factorization.

2287291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 2287291 is about 1512.3792513784. The cubic root of 2287291 is about 131.7570331596.

The spelling of 2287291 in words is "two million, two hundred eighty-seven thousand, two hundred ninety-one".