2218523 has 2 divisors, whose sum is σ = 2218524. Its totient is φ = 2218522.

The previous prime is 2218519. The next prime is 2218547. The reversal of 2218523 is 3258122.

2218523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2218523 - 2² = 2218519 is a prime.

It is a plaindrome in base 7.

It is not a weakly prime, because it can be changed into another prime (2218583) 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 as a sum of consecutive naturals, namely, 1109261 + 1109262.

It is an arithmetic number, because the mean of its divisors is an integer number (1109262).

2^2218523 is an apocalyptic number.

2218523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218523 is an equidigital number, since it uses as much as digits as its factorization.

2218523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 2218523 is about 1489.4707113602. The cubic root of 2218523 is about 130.4231379959.

The spelling of 2218523 in words is "two million, two hundred eighteen thousand, five hundred twenty-three".