47008505 has 4 divisors (see below), whose sum is σ = 56410212. Its totient is φ = 37606800.

The previous prime is 47008501. The next prime is 47008517. The reversal of 47008505 is 50580074.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30880249 + 16128256 = 5557^2 + 4016^2 .

It is not a de Polignac number, because 47008505 - 2² = 47008501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47008501) 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, 4700846 + ... + 4700855.

It is an arithmetic number, because the mean of its divisors is an integer number (14102553).

Almost surely, 2^47008505 is an apocalyptic number.

It is an amenable number.

47008505 is a deficient number, since it is larger than the sum of its proper divisors (9401707).

47008505 is an equidigital number, since it uses as much as digits as its factorization.

47008505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9401706.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 47008505 is about 6856.2748632184. The cubic root of 47008505 is about 360.9043748327.

Adding to 47008505 its reverse (50580074), we get a palindrome (97588579).

The spelling of 47008505 in words is "forty-seven million, eight thousand, five hundred five".