165105210 has 16 divisors (see below), whose sum is σ = 396252576. Its totient is φ = 44028048.

The previous prime is 165105209. The next prime is 165105233. The reversal of 165105210 is 12501561.

165105210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 2751724 + ... + 2751783.

It is an arithmetic number, because the mean of its divisors is an integer number (24765786).

Almost surely, 2^165105210 is an apocalyptic number.

165105210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165105210 is an abundant number, since it is smaller than the sum of its proper divisors (231147366).

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

165105210 is a wasteful number, since it uses less digits than its factorization.

165105210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503517.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 165105210 is about 12849.3272197419. The cubic root of 165105210 is about 548.5972075443.

Adding to 165105210 its reverse (12501561), we get a palindrome (177606771).

The spelling of 165105210 in words is "one hundred sixty-five million, one hundred five thousand, two hundred ten".