2218351 has 2 divisors, whose sum is σ = 2218352. Its totient is φ = 2218350.

The previous prime is 2218343. The next prime is 2218361. The reversal of 2218351 is 1538122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2218351 - 2³ = 2218343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2218331) 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, 1109175 + 1109176.

It is an arithmetic number, because the mean of its divisors is an integer number (1109176).

2^2218351 is an apocalyptic number.

2218351 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218351 is an equidigital number, since it uses as much as digits as its factorization.

2218351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 2218351 is about 1489.4129716100. The cubic root of 2218351 is about 130.4197673811.

The spelling of 2218351 in words is "two million, two hundred eighteen thousand, three hundred fifty-one".