165203041 has 2 divisors, whose sum is σ = 165203042. Its totient is φ = 165203040.

The previous prime is 165203023. The next prime is 165203107. The reversal of 165203041 is 140302561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136890000 + 28313041 = 11700^2 + 5321^2 .

It is a cyclic number.

It is not a de Polignac number, because 165203041 - 2¹³ = 165194849 is a prime.

It is not a weakly prime, because it can be changed into another prime (165203011) 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, 82601520 + 82601521.

It is an arithmetic number, because the mean of its divisors is an integer number (82601521).

Almost surely, 2^165203041 is an apocalyptic number.

It is an amenable number.

165203041 is a deficient number, since it is larger than the sum of its proper divisors (1).

165203041 is an equidigital number, since it uses as much as digits as its factorization.

165203041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 165203041 is about 12853.1335089931. The cubic root of 165203041 is about 548.7055409244.

The spelling of 165203041 in words is "one hundred sixty-five million, two hundred three thousand, forty-one".