34355621 has 2 divisors, whose sum is σ = 34355622. Its totient is φ = 34355620.

The previous prime is 34355597. The next prime is 34355639. The reversal of 34355621 is 12655343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 16924996 = 4175^2 + 4114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34355621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34355681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17177810 + 17177811.

It is an arithmetic number, because the mean of its divisors is an integer number (17177811).

Almost surely, 2^34355621 is an apocalyptic number.

It is an amenable number.

34355621 is a deficient number, since it is larger than the sum of its proper divisors (1).

34355621 is an equidigital number, since it uses as much as digits as its factorization.

34355621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 29.

The square root of 34355621 is about 5861.3668201197. The cubic root of 34355621 is about 325.0867492294.

The spelling of 34355621 in words is "thirty-four million, three hundred fifty-five thousand, six hundred twenty-one".