214430521 has 2 divisors, whose sum is σ = 214430522. Its totient is φ = 214430520.

The previous prime is 214430509. The next prime is 214430539. The reversal of 214430521 is 125034412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140659600 + 73770921 = 11860^2 + 8589^2 .

It is a cyclic number.

It is not a de Polignac number, because 214430521 - 2¹⁵ = 214397753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214430492 and 214430501.

It is not a weakly prime, because it can be changed into another prime (214430581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107215260 + 107215261.

It is an arithmetic number, because the mean of its divisors is an integer number (107215261).

Almost surely, 2^214430521 is an apocalyptic number.

It is an amenable number.

214430521 is a deficient number, since it is larger than the sum of its proper divisors (1).

214430521 is an equidigital number, since it uses as much as digits as its factorization.

214430521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 214430521 is about 14643.4463498181. The cubic root of 214430521 is about 598.5432446727.

Adding to 214430521 its reverse (125034412), we get a palindrome (339464933).

The spelling of 214430521 in words is "two hundred fourteen million, four hundred thirty thousand, five hundred twenty-one".