165350503 has 2 divisors, whose sum is σ = 165350504. Its totient is φ = 165350502.

The previous prime is 165350501. The next prime is 165350531. The reversal of 165350503 is 305053561.

It is a happy number.

It is an a-pointer prime, because the next prime (165350531) can be obtained adding 165350503 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (305053561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165350503 - 2¹ = 165350501 is a prime.

Together with 165350501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165350501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82675251 + 82675252.

It is an arithmetic number, because the mean of its divisors is an integer number (82675252).

Almost surely, 2^165350503 is an apocalyptic number.

165350503 is a deficient number, since it is larger than the sum of its proper divisors (1).

165350503 is an equidigital number, since it uses as much as digits as its factorization.

165350503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 165350503 is about 12858.8686516349. The cubic root of 165350503 is about 548.8687525160.

The spelling of 165350503 in words is "one hundred sixty-five million, three hundred fifty thousand, five hundred three".