165416875 has 20 divisors (see below), whose sum is σ = 222616240. Its totient is φ = 122148000.

The previous prime is 165416873. The next prime is 165416879. The reversal of 165416875 is 578614561.

It is not a de Polignac number, because 165416875 - 2¹ = 165416873 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (165416873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2055 + ... + 18304.

It is an arithmetic number, because the mean of its divisors is an integer number (11130812).

Almost surely, 2^165416875 is an apocalyptic number.

165416875 is a deficient number, since it is larger than the sum of its proper divisors (57199365).

165416875 is an equidigital number, since it uses as much as digits as its factorization.

165416875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392 (or 20377 counting only the distinct ones).

The product of its digits is 201600, while the sum is 43.

The square root of 165416875 is about 12861.4491796220. The cubic root of 165416875 is about 548.9421816720.

The spelling of 165416875 in words is "one hundred sixty-five million, four hundred sixteen thousand, eight hundred seventy-five".