34206521 has 2 divisors, whose sum is σ = 34206522. Its totient is φ = 34206520.

The previous prime is 34206481. The next prime is 34206539. The reversal of 34206521 is 12560243.

34206521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 15405625 = 4336^2 + 3925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34206521 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34206551) 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, 17103260 + 17103261.

It is an arithmetic number, because the mean of its divisors is an integer number (17103261).

Almost surely, 2^34206521 is an apocalyptic number.

It is an amenable number.

34206521 is a deficient number, since it is larger than the sum of its proper divisors (1).

34206521 is an equidigital number, since it uses as much as digits as its factorization.

34206521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 34206521 is about 5848.6341140475. The cubic root of 34206521 is about 324.6157858041.

Adding to 34206521 its reverse (12560243), we get a palindrome (46766764).

The spelling of 34206521 in words is "thirty-four million, two hundred six thousand, five hundred twenty-one".