165745453 has 8 divisors (see below), whose sum is σ = 171659520. Its totient is φ = 159930960.

The previous prime is 165745441. The next prime is 165745487. The reversal of 165745453 is 354547561.

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 165745453 - 2⁵ = 165745421 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 (165745253) 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, 21498 + ... + 28171.

It is an arithmetic number, because the mean of its divisors is an integer number (21457440).

Almost surely, 2^165745453 is an apocalyptic number.

It is an amenable number.

165745453 is a deficient number, since it is larger than the sum of its proper divisors (5914067).

165745453 is an equidigital number, since it uses as much as digits as its factorization.

165745453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49787.

The product of its digits is 252000, while the sum is 40.

The square root of 165745453 is about 12874.2165975255. The cubic root of 165745453 is about 549.3054074690.

The spelling of 165745453 in words is "one hundred sixty-five million, seven hundred forty-five thousand, four hundred fifty-three".