153030217 has 2 divisors, whose sum is σ = 153030218. Its totient is φ = 153030216.

The previous prime is 153030203. The next prime is 153030221. The reversal of 153030217 is 712030351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121793296 + 31236921 = 11036^2 + 5589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153030217 is a prime.

It is not a weakly prime, because it can be changed into another prime (153030257) 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, 76515108 + 76515109.

It is an arithmetic number, because the mean of its divisors is an integer number (76515109).

Almost surely, 2^153030217 is an apocalyptic number.

It is an amenable number.

153030217 is a deficient number, since it is larger than the sum of its proper divisors (1).

153030217 is an equidigital number, since it uses as much as digits as its factorization.

153030217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 153030217 is about 12370.5382663811. The cubic root of 153030217 is about 534.8833320584.

Adding to 153030217 its reverse (712030351), we get a palindrome (865060568).

The spelling of 153030217 in words is "one hundred fifty-three million, thirty thousand, two hundred seventeen".