165343501 has 2 divisors, whose sum is σ = 165343502. Its totient is φ = 165343500.

The previous prime is 165343499. The next prime is 165343537. The reversal of 165343501 is 105343561.

It is the 5250-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164506276 + 837225 = 12826^2 + 915^2 .

It is a cyclic number.

It is not a de Polignac number, because 165343501 - 2¹ = 165343499 is a prime.

Together with 165343499, it forms a pair of twin primes.

It is equal to p_9257050 and since 165343501 and 9257050 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165343501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165343561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82671750 + 82671751.

It is an arithmetic number, because the mean of its divisors is an integer number (82671751).

Almost surely, 2^165343501 is an apocalyptic number.

It is an amenable number.

165343501 is a deficient number, since it is larger than the sum of its proper divisors (1).

165343501 is an equidigital number, since it uses as much as digits as its factorization.

165343501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 165343501 is about 12858.5963852980. The cubic root of 165343501 is about 548.8610048664.

It can be divided in two parts, 1653 and 43501, that added together give a palindrome (45154).

The spelling of 165343501 in words is "one hundred sixty-five million, three hundred forty-three thousand, five hundred one".