165215214 has 48 divisors (see below), whose sum is σ = 393080688. Its totient is φ = 51829632.

The previous prime is 165215201. The next prime is 165215221. The reversal of 165215214 is 412512561.

165215214 is a `hidden beast` number, since 1 + 652 + 1 + 5 + 2 + 1 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1737 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (8189181).

Almost surely, 2^165215214 is an apocalyptic number.

165215214 is an abundant number, since it is smaller than the sum of its proper divisors (227865474).

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

165215214 is a wasteful number, since it uses less digits than its factorization.

165215214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20031 (or 20019 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 165215214 is about 12853.6070423831. The cubic root of 165215214 is about 548.7190177314.

Adding to 165215214 its reverse (412512561), we get a palindrome (577727775).

The spelling of 165215214 in words is "one hundred sixty-five million, two hundred fifteen thousand, two hundred fourteen".