34516421 has 2 divisors, whose sum is σ = 34516422. Its totient is φ = 34516420.

The previous prime is 34516403. The next prime is 34516429. The reversal of 34516421 is 12461543.

34516421 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., 34093921 + 422500 = 5839^2 + 650^2 .

It is an emirp because it is prime and its reverse (12461543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34516421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34516429) 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, 17258210 + 17258211.

It is an arithmetic number, because the mean of its divisors is an integer number (17258211).

Almost surely, 2^34516421 is an apocalyptic number.

It is an amenable number.

34516421 is a deficient number, since it is larger than the sum of its proper divisors (1).

34516421 is an equidigital number, since it uses as much as digits as its factorization.

34516421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 34516421 is about 5875.0677442903. The cubic root of 34516421 is about 325.5931448238.

Adding to 34516421 its reverse (12461543), we get a palindrome (46977964).

The spelling of 34516421 in words is "thirty-four million, five hundred sixteen thousand, four hundred twenty-one".