165452585 has 8 divisors (see below), whose sum is σ = 210222216. Its totient is φ = 124576000.

The previous prime is 165452563. The next prime is 165452621. The reversal of 165452585 is 585254561.

It can be written as a sum of positive squares in 4 ways, for example, as 17197609 + 148254976 = 4147^2 + 12176^2 .

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

It is not a de Polignac number, because 165452585 - 2¹⁶ = 165387049 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973166 + ... + 973335.

It is an arithmetic number, because the mean of its divisors is an integer number (26277777).

Almost surely, 2^165452585 is an apocalyptic number.

It is an amenable number.

165452585 is a deficient number, since it is larger than the sum of its proper divisors (44769631).

165452585 is a wasteful number, since it uses less digits than its factorization.

165452585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946523.

The product of its digits is 240000, while the sum is 41.

The square root of 165452585 is about 12862.8373619509. The cubic root of 165452585 is about 548.9816804935.

The spelling of 165452585 in words is "one hundred sixty-five million, four hundred fifty-two thousand, five hundred eighty-five".