47920165 has 4 divisors (see below), whose sum is σ = 57504204. Its totient is φ = 38336128.

The previous prime is 47920153. The next prime is 47920177. The reversal of 47920165 is 56102974.

47920165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (47920153) and next prime (47920177).

It can be written as a sum of positive squares in 2 ways, for example, as 10355524 + 37564641 = 3218^2 + 6129^2 .

It is a cyclic number.

It is not a de Polignac number, because 47920165 - 2¹⁵ = 47887397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47920165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4792012 + ... + 4792021.

It is an arithmetic number, because the mean of its divisors is an integer number (14376051).

Almost surely, 2^47920165 is an apocalyptic number.

It is an amenable number.

47920165 is a deficient number, since it is larger than the sum of its proper divisors (9584039).

47920165 is an equidigital number, since it uses as much as digits as its factorization.

47920165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9584038.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 47920165 is about 6922.4392377254. The cubic root of 47920165 is about 363.2225208927. Note that the first 3 decimals are identical.

The spelling of 47920165 in words is "forty-seven million, nine hundred twenty thousand, one hundred sixty-five".