165747455 has 8 divisors (see below), whose sum is σ = 199774512. Its totient is φ = 132012928.

The previous prime is 165747443. The next prime is 165747473. The reversal of 165747455 is 554747561.

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 165747455 - 2⁶ = 165747391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71882 + ... + 74151.

It is an arithmetic number, because the mean of its divisors is an integer number (24971814).

Almost surely, 2^165747455 is an apocalyptic number.

165747455 is a deficient number, since it is larger than the sum of its proper divisors (34027057).

165747455 is a wasteful number, since it uses less digits than its factorization.

165747455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146265.

The product of its digits is 588000, while the sum is 44.

The square root of 165747455 is about 12874.2943495945. The cubic root of 165747455 is about 549.3076191033.

The spelling of 165747455 in words is "one hundred sixty-five million, seven hundred forty-seven thousand, four hundred fifty-five".