165201853 has 2 divisors, whose sum is σ = 165201854. Its totient is φ = 165201852.

The previous prime is 165201811. The next prime is 165201863. The reversal of 165201853 is 358102561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154430329 + 10771524 = 12427^2 + 3282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165201853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165201863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82600926 + 82600927.

It is an arithmetic number, because the mean of its divisors is an integer number (82600927).

Almost surely, 2^165201853 is an apocalyptic number.

It is an amenable number.

165201853 is a deficient number, since it is larger than the sum of its proper divisors (1).

165201853 is an equidigital number, since it uses as much as digits as its factorization.

165201853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 165201853 is about 12853.0872944985. The cubic root of 165201853 is about 548.7042256465.

The spelling of 165201853 in words is "one hundred sixty-five million, two hundred one thousand, eight hundred fifty-three".