165357563 has 8 divisors (see below), whose sum is σ = 189454560. Its totient is φ = 141379200.

The previous prime is 165357547. The next prime is 165357583. The reversal of 165357563 is 365753561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165357563 - 2⁴ = 165357547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165357563.

It is not an unprimeable number, because it can be changed into a prime (165357523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26648 + ... + 32261.

It is an arithmetic number, because the mean of its divisors is an integer number (23681820).

Almost surely, 2^165357563 is an apocalyptic number.

165357563 is a deficient number, since it is larger than the sum of its proper divisors (24096997).

165357563 is an equidigital number, since it uses as much as digits as its factorization.

165357563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59317.

The product of its digits is 283500, while the sum is 41.

The square root of 165357563 is about 12859.1431674120. The cubic root of 165357563 is about 548.8765641206.

The spelling of 165357563 in words is "one hundred sixty-five million, three hundred fifty-seven thousand, five hundred sixty-three".