34571221 has 2 divisors, whose sum is σ = 34571222. Its totient is φ = 34571220.

The previous prime is 34571197. The next prime is 34571233. The reversal of 34571221 is 12217543.

It is a happy number.

34571221 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., 28622500 + 5948721 = 5350^2 + 2439^2 .

It is a cyclic number.

It is not a de Polignac number, because 34571221 - 2¹¹ = 34569173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34571261) 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, 17285610 + 17285611.

It is an arithmetic number, because the mean of its divisors is an integer number (17285611).

Almost surely, 2^34571221 is an apocalyptic number.

It is an amenable number.

34571221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34571221 is an equidigital number, since it uses as much as digits as its factorization.

34571221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 25.

The square root of 34571221 is about 5879.7296706566. The cubic root of 34571221 is about 325.7653630472.

Adding to 34571221 its reverse (12217543), we get a palindrome (46788764).

The spelling of 34571221 in words is "thirty-four million, five hundred seventy-one thousand, two hundred twenty-one".