153020209 has 2 divisors, whose sum is σ = 153020210. Its totient is φ = 153020208.

The previous prime is 153020201. The next prime is 153020221. The reversal of 153020209 is 902020351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150307600 + 2712609 = 12260^2 + 1647^2 .

It is an emirp because it is prime and its reverse (902020351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 153020209 - 2³ = 153020201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 153020209.

It is not a weakly prime, because it can be changed into another prime (153020201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76510104 + 76510105.

It is an arithmetic number, because the mean of its divisors is an integer number (76510105).

Almost surely, 2^153020209 is an apocalyptic number.

It is an amenable number.

153020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

153020209 is an equidigital number, since it uses as much as digits as its factorization.

153020209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 153020209 is about 12370.1337502874. The cubic root of 153020209 is about 534.8716715529.

The spelling of 153020209 in words is "one hundred fifty-three million, twenty thousand, two hundred nine".