47612281 has 2 divisors, whose sum is σ = 47612282. Its totient is φ = 47612280.

The previous prime is 47612267. The next prime is 47612317. The reversal of 47612281 is 18221674.

47612281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39438400 + 8173881 = 6280^2 + 2859^2 .

It is a cyclic number.

It is not a de Polignac number, because 47612281 - 2²³ = 39223673 is a prime.

It is a super-2 number, since 2×47612281² = 4533858604045922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47612251) by changing a digit.

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 as a sum of consecutive naturals, namely, 23806140 + 23806141.

It is an arithmetic number, because the mean of its divisors is an integer number (23806141).

Almost surely, 2^47612281 is an apocalyptic number.

It is an amenable number.

47612281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47612281 is an equidigital number, since it uses as much as digits as its factorization.

47612281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 47612281 is about 6900.1652878754. The cubic root of 47612281 is about 362.4429551140.

The spelling of 47612281 in words is "forty-seven million, six hundred twelve thousand, two hundred eighty-one".