165485047 has 16 divisors (see below), whose sum is σ = 204063552. Its totient is φ = 130682880.

The previous prime is 165485039. The next prime is 165485057. The reversal of 165485047 is 740584561.

It is a cyclic number.

It is not a de Polignac number, because 165485047 - 2³ = 165485039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165485057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56913 + ... + 59749.

It is an arithmetic number, because the mean of its divisors is an integer number (12753972).

Almost surely, 2^165485047 is an apocalyptic number.

165485047 is a deficient number, since it is larger than the sum of its proper divisors (38578505).

165485047 is a wasteful number, since it uses less digits than its factorization.

165485047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 165485047 is about 12864.0991522920. The cubic root of 165485047 is about 549.0175817719.

The spelling of 165485047 in words is "one hundred sixty-five million, four hundred eighty-five thousand, forty-seven".