165215022 has 32 divisors (see below), whose sum is σ = 379095552. Its totient is φ = 47021664.

The previous prime is 165215021. The next prime is 165215033. The reversal of 165215022 is 220512561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 165214983 and 165215001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165215021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3568 + ... + 18524.

It is an arithmetic number, because the mean of its divisors is an integer number (11846736).

Almost surely, 2^165215022 is an apocalyptic number.

165215022 is an abundant number, since it is smaller than the sum of its proper divisors (213880530).

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

165215022 is a wasteful number, since it uses less digits than its factorization.

165215022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15232.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 165215022 is about 12853.5995736603. The cubic root of 165215022 is about 548.7188051721.

Adding to 165215022 its reverse (220512561), we get a palindrome (385727583).

The spelling of 165215022 in words is "one hundred sixty-five million, two hundred fifteen thousand, twenty-two".