34505021 has 2 divisors, whose sum is σ = 34505022. Its totient is φ = 34505020.

The previous prime is 34505017. The next prime is 34505027. The reversal of 34505021 is 12050543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19404025 + 15100996 = 4405^2 + 3886^2 .

It is a cyclic number.

It is not a de Polignac number, because 34505021 - 2² = 34505017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34504984 and 34505002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34505027) 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, 17252510 + 17252511.

It is an arithmetic number, because the mean of its divisors is an integer number (17252511).

Almost surely, 2^34505021 is an apocalyptic number.

It is an amenable number.

34505021 is a deficient number, since it is larger than the sum of its proper divisors (1).

34505021 is an equidigital number, since it uses as much as digits as its factorization.

34505021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 34505021 is about 5874.0974625895. The cubic root of 34505021 is about 325.5572955048.

Adding to 34505021 its reverse (12050543), we get a palindrome (46555564).

The spelling of 34505021 in words is "thirty-four million, five hundred five thousand, twenty-one".