34561221 has 12 divisors (see below), whose sum is σ = 48952992. Its totient is φ = 21684928.

The previous prime is 34561211. The next prime is 34561223. The reversal of 34561221 is 12216543.

34561221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 34561221 - 2¹⁸ = 34299077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34561191 and 34561200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34561223) 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 in 11 ways as a sum of consecutive naturals, for example, 19065 + ... + 20798.

It is an arithmetic number, because the mean of its divisors is an integer number (4079416).

Almost surely, 2^34561221 is an apocalyptic number.

It is an amenable number.

34561221 is a deficient number, since it is larger than the sum of its proper divisors (14391771).

34561221 is a wasteful number, since it uses less digits than its factorization.

34561221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39900 (or 39883 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 34561221 is about 5878.8792299213. The cubic root of 34561221 is about 325.7339499461.

Adding to 34561221 its reverse (12216543), we get a palindrome (46777764).

The spelling of 34561221 in words is "thirty-four million, five hundred sixty-one thousand, two hundred twenty-one".