2214521 has 2 divisors, whose sum is σ = 2214522. Its totient is φ = 2214520.

The previous prime is 2214517. The next prime is 2214559. The reversal of 2214521 is 1254122.

2214521 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 can be written as a sum of positive squares in only one way, i.e., 1860496 + 354025 = 1364^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2214521 - 2² = 2214517 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2214521.

It is not a weakly prime, because it can be changed into another prime (2214571) 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, 1107260 + 1107261.

It is an arithmetic number, because the mean of its divisors is an integer number (1107261).

2^2214521 is an apocalyptic number.

It is an amenable number.

2214521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2214521 is an equidigital number, since it uses as much as digits as its factorization.

2214521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 17.

The square root of 2214521 is about 1488.1266747156. The cubic root of 2214521 is about 130.3446672349.

Adding to 2214521 its reverse (1254122), we get a palindrome (3468643).

The spelling of 2214521 in words is "two million, two hundred fourteen thousand, five hundred twenty-one".