165122115 has 16 divisors (see below), whose sum is σ = 265568928. Its totient is φ = 87607296.

The previous prime is 165122101. The next prime is 165122117. The reversal of 165122115 is 511221561.

It is not a de Polignac number, because 165122115 - 2¹⁰ = 165121091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165122117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25624 + ... + 31413.

It is an arithmetic number, because the mean of its divisors is an integer number (16598058).

Almost surely, 2^165122115 is an apocalyptic number.

165122115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

165122115 is a deficient number, since it is larger than the sum of its proper divisors (100446813).

165122115 is a wasteful number, since it uses less digits than its factorization.

165122115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57238.

The product of its digits is 600, while the sum is 24.

The square root of 165122115 is about 12849.9850194465. The cubic root of 165122115 is about 548.6159303924.

Adding to 165122115 its reverse (511221561), we get a palindrome (676343676).

The spelling of 165122115 in words is "one hundred sixty-five million, one hundred twenty-two thousand, one hundred fifteen".