47105717 has 2 divisors, whose sum is σ = 47105718. Its totient is φ = 47105716.

The previous prime is 47105713. The next prime is 47105719. The reversal of 47105717 is 71750174.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46117681 + 988036 = 6791^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 47105717 - 2² = 47105713 is a prime.

Together with 47105719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47105713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23552858 + 23552859.

It is an arithmetic number, because the mean of its divisors is an integer number (23552859).

Almost surely, 2^47105717 is an apocalyptic number.

It is an amenable number.

47105717 is a deficient number, since it is larger than the sum of its proper divisors (1).

47105717 is an equidigital number, since it uses as much as digits as its factorization.

47105717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 47105717 is about 6863.3604742866. The cubic root of 47105717 is about 361.1529828913.

The spelling of 47105717 in words is "forty-seven million, one hundred five thousand, seven hundred seventeen".