47173145 has 8 divisors (see below), whose sum is σ = 56677320. Its totient is φ = 37692160.

The previous prime is 47173141. The next prime is 47173153. The reversal of 47173145 is 54137174.

It can be written as a sum of positive squares in 4 ways, for example, as 8596624 + 38576521 = 2932^2 + 6211^2 .

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

It is not a de Polignac number, because 47173145 - 2² = 47173141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47173141) 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, 950 + ... + 9759.

It is an arithmetic number, because the mean of its divisors is an integer number (7084665).

Almost surely, 2^47173145 is an apocalyptic number.

It is an amenable number.

47173145 is a deficient number, since it is larger than the sum of its proper divisors (9504175).

47173145 is a wasteful number, since it uses less digits than its factorization.

47173145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11595.

The product of its digits is 11760, while the sum is 32.

The square root of 47173145 is about 6868.2708886589. The cubic root of 47173145 is about 361.3252211028.

The spelling of 47173145 in words is "forty-seven million, one hundred seventy-three thousand, one hundred forty-five".