47945 has 8 divisors (see below), whose sum is σ = 59136. Its totient is φ = 37296.

The previous prime is 47939. The next prime is 47947. The reversal of 47945 is 54974.

47945 = 10² + 11² + ... + 52².

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 47945 - 2⁶ = 47881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (47947) 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, 104 + ... + 326.

It is an arithmetic number, because the mean of its divisors is an integer number (7392).

2⁴⁷⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

47945 is a deficient number, since it is larger than the sum of its proper divisors (11191).

47945 is a wasteful number, since it uses less digits than its factorization.

47945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271.

The product of its digits is 5040, while the sum is 29.

The square root of 47945 is about 218.9634672725. The cubic root of 47945 is about 36.3285257693.

Adding to 47945 its sum of digits (29), we get a palindrome (47974).

The spelling of 47945 in words is "forty-seven thousand, nine hundred forty-five".