30550217 has 2 divisors, whose sum is σ = 30550218. Its totient is φ = 30550216.

The previous prime is 30550211. The next prime is 30550237. The reversal of 30550217 is 71205503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18011536 + 12538681 = 4244^2 + 3541^2 .

It is a cyclic number.

It is not a de Polignac number, because 30550217 - 2⁶ = 30550153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30550192 and 30550201.

It is not a weakly prime, because it can be changed into another prime (30550211) 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, 15275108 + 15275109.

It is an arithmetic number, because the mean of its divisors is an integer number (15275109).

Almost surely, 2^30550217 is an apocalyptic number.

It is an amenable number.

30550217 is a deficient number, since it is larger than the sum of its proper divisors (1).

30550217 is an equidigital number, since it uses as much as digits as its factorization.

30550217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 30550217 is about 5527.2250723125. The cubic root of 30550217 is about 312.6113676665.

The spelling of 30550217 in words is "thirty million, five hundred fifty thousand, two hundred seventeen".