165212010 has 24 divisors (see below), whose sum is σ = 429551460. Its totient is φ = 44056512.

The previous prime is 165212009. The next prime is 165212027. The reversal of 165212010 is 10212561.

165212010 is a `hidden beast` number, since 1 + 652 + 1 + 2 + 0 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 164942649 + 269361 = 12843^2 + 519^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 917755 + ... + 917934.

Almost surely, 2^165212010 is an apocalyptic number.

165212010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165212010 is an abundant number, since it is smaller than the sum of its proper divisors (264339450).

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

165212010 is a wasteful number, since it uses less digits than its factorization.

165212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835702 (or 1835699 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 165212010 is about 12853.4824075034. The cubic root of 165212010 is about 548.7154706265.

Adding to 165212010 its reverse (10212561), we get a palindrome (175424571).

The spelling of 165212010 in words is "one hundred sixty-five million, two hundred twelve thousand, ten".