165243000 has 256 divisors, whose sum is σ = 587059200. Its totient is φ = 38361600.

The previous prime is 165242983. The next prime is 165243031. The reversal of 165243000 is 342561.

It is a happy number.

165243000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740889 + ... + 741111.

It is an arithmetic number, because the mean of its divisors is an integer number (2293200).

Almost surely, 2^165243000 is an apocalyptic number.

165243000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293529600).

165243000 is an abundant number, since it is smaller than the sum of its proper divisors (421816200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165243000 is a wasteful number, since it uses less digits than its factorization.

165243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 165243000 is about 12854.6878608545. The cubic root of 165243000 is about 548.7497773118.

Adding to 165243000 its reverse (342561), we get a palindrome (165585561).

The spelling of 165243000 in words is "one hundred sixty-five million, two hundred forty-three thousand".