165454799 has 4 divisors (see below), whose sum is σ = 165987120. Its totient is φ = 164922480.

The previous prime is 165454789. The next prime is 165454813. The reversal of 165454799 is 997454561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165454799 - 2²⁴ = 148677583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165454739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265694 + ... + 266315.

It is an arithmetic number, because the mean of its divisors is an integer number (41496780).

Almost surely, 2^165454799 is an apocalyptic number.

165454799 is a deficient number, since it is larger than the sum of its proper divisors (532321).

165454799 is an equidigital number, since it uses as much as digits as its factorization.

165454799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532320.

The product of its digits is 1360800, while the sum is 50.

The square root of 165454799 is about 12862.9234235457. The cubic root of 165454799 is about 548.9841292112.

The spelling of 165454799 in words is "one hundred sixty-five million, four hundred fifty-four thousand, seven hundred ninety-nine".