165351601 has 8 divisors (see below), whose sum is σ = 167148800. Its totient is φ = 163564272.

The previous prime is 165351559. The next prime is 165351617. The reversal of 165351601 is 106153561.

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 165351601 - 2⁹ = 165351089 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 165351601.

It is not an unprimeable number, because it can be changed into a prime (165351001) 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 in 7 ways as a sum of consecutive naturals, for example, 34075 + ... + 38623.

It is an arithmetic number, because the mean of its divisors is an integer number (20893600).

Almost surely, 2^165351601 is an apocalyptic number.

It is an amenable number.

165351601 is a deficient number, since it is larger than the sum of its proper divisors (1797199).

165351601 is a wasteful number, since it uses less digits than its factorization.

165351601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 165351601 is about 12858.9113458333. The cubic root of 165351601 is about 548.8699674232.

The spelling of 165351601 in words is "one hundred sixty-five million, three hundred fifty-one thousand, six hundred one".