165075107 has 4 divisors (see below), whose sum is σ = 166709616. Its totient is φ = 163440600.

The previous prime is 165075101. The next prime is 165075109. The reversal of 165075107 is 701570561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165075107 - 2⁴ = 165075091 is a prime.

It is a super-2 number, since 2×165075107² = 54499581902122898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165075101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817103 + ... + 817304.

It is an arithmetic number, because the mean of its divisors is an integer number (41677404).

Almost surely, 2^165075107 is an apocalyptic number.

165075107 is a deficient number, since it is larger than the sum of its proper divisors (1634509).

165075107 is a wasteful number, since it uses less digits than its factorization.

165075107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634508.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 165075107 is about 12848.1557820568. The cubic root of 165075107 is about 548.5638643092.

The spelling of 165075107 in words is "one hundred sixty-five million, seventy-five thousand, one hundred seven".