165470047 has 4 divisors (see below), whose sum is σ = 165549616. Its totient is φ = 165390480.

The previous prime is 165470023. The next prime is 165470051. The reversal of 165470047 is 740074561.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165470047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165469994 and 165470021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165470057) 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, 36579 + ... + 40852.

It is an arithmetic number, because the mean of its divisors is an integer number (41387404).

Almost surely, 2^165470047 is an apocalyptic number.

165470047 is a deficient number, since it is larger than the sum of its proper divisors (79569).

165470047 is an equidigital number, since it uses as much as digits as its factorization.

165470047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79568.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 165470047 is about 12863.5161211855. The cubic root of 165470047 is about 549.0009931380. Note that the first 3 decimals are identical.

The spelling of 165470047 in words is "one hundred sixty-five million, four hundred seventy thousand, forty-seven".