2216437 has 2 divisors, whose sum is σ = 2216438. Its totient is φ = 2216436.

The previous prime is 2216413. The next prime is 2216471. The reversal of 2216437 is 7346122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 1062961 = 1074^2 + 1031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216437 - 2⁷ = 2216309 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 1 + 6⁴ + 4³ + 3⁵ + 7⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108218 + 1108219.

It is an arithmetic number, because the mean of its divisors is an integer number (1108219).

2^2216437 is an apocalyptic number.

It is an amenable number.

2216437 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216437 is an equidigital number, since it uses as much as digits as its factorization.

2216437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 2216437 is about 1488.7702979305. The cubic root of 2216437 is about 130.3822477308.

It can be divided in two parts, 22164 and 37, that added together give a square (22201 = 149²).

The spelling of 2216437 in words is "two million, two hundred sixteen thousand, four hundred thirty-seven".