165147047 has 8 divisors (see below), whose sum is σ = 181987344. Its totient is φ = 148897728.

The previous prime is 165147043. The next prime is 165147053. The reversal of 165147047 is 740741561.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165147047 - 2² = 165147043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165146998 and 165147016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165147041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147158 + ... + 148275.

It is an arithmetic number, because the mean of its divisors is an integer number (22748418).

Almost surely, 2^165147047 is an apocalyptic number.

165147047 is a deficient number, since it is larger than the sum of its proper divisors (16840297).

165147047 is a wasteful number, since it uses less digits than its factorization.

165147047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295489.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 165147047 is about 12850.9551006919. The cubic root of 165147047 is about 548.6435410772.

The spelling of 165147047 in words is "one hundred sixty-five million, one hundred forty-seven thousand, forty-seven".