165800153 has 2 divisors, whose sum is σ = 165800154. Its totient is φ = 165800152.

The previous prime is 165800149. The next prime is 165800191. The reversal of 165800153 is 351008561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108222409 + 57577744 = 10403^2 + 7588^2 .

It is an emirp because it is prime and its reverse (351008561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165800153 - 2² = 165800149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (165800113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82900076 + 82900077.

It is an arithmetic number, because the mean of its divisors is an integer number (82900077).

Almost surely, 2^165800153 is an apocalyptic number.

It is an amenable number.

165800153 is a deficient number, since it is larger than the sum of its proper divisors (1).

165800153 is an equidigital number, since it uses as much as digits as its factorization.

165800153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 165800153 is about 12876.3408233861. The cubic root of 165800153 is about 549.3658288369.

The spelling of 165800153 in words is "one hundred sixty-five million, eight hundred thousand, one hundred fifty-three".