165753941 has 2 divisors, whose sum is σ = 165753942. Its totient is φ = 165753940.

The previous prime is 165753901. The next prime is 165753947. The reversal of 165753941 is 149357561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157602916 + 8151025 = 12554^2 + 2855^2 .

It is a cyclic number.

It is not a de Polignac number, because 165753941 - 2²⁶ = 98645077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165753947) 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, 82876970 + 82876971.

It is an arithmetic number, because the mean of its divisors is an integer number (82876971).

Almost surely, 2^165753941 is an apocalyptic number.

It is an amenable number.

165753941 is a deficient number, since it is larger than the sum of its proper divisors (1).

165753941 is an equidigital number, since it uses as much as digits as its factorization.

165753941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 165753941 is about 12874.5462444313. The cubic root of 165753941 is about 549.3147841460.

The spelling of 165753941 in words is "one hundred sixty-five million, seven hundred fifty-three thousand, nine hundred forty-one".