165535245 has 48 divisors (see below), whose sum is σ = 304903872. Its totient is φ = 86106240.

The previous prime is 165535231. The next prime is 165535291. The reversal of 165535245 is 542535561.

165535245 is a `hidden beast` number, since 16 + 553 + 52 + 45 = 666.

It is not a de Polignac number, because 165535245 - 2⁵ = 165535213 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 47 ways as a sum of consecutive naturals, for example, 48154 + ... + 51476.

It is an arithmetic number, because the mean of its divisors is an integer number (6352164).

Almost surely, 2^165535245 is an apocalyptic number.

165535245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165535245 is a deficient number, since it is larger than the sum of its proper divisors (139368627).

165535245 is an equidigital number, since it uses as much as digits as its factorization.

165535245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384 (or 3372 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 165535245 is about 12866.0500931716. The cubic root of 165535245 is about 549.0730888986.

The spelling of 165535245 in words is "one hundred sixty-five million, five hundred thirty-five thousand, two hundred forty-five".