47357281 has 2 divisors, whose sum is σ = 47357282. Its totient is φ = 47357280.

The previous prime is 47357279. The next prime is 47357311. The reversal of 47357281 is 18275374.

47357281 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., 24403600 + 22953681 = 4940^2 + 4791^2 .

It is a cyclic number.

It is not a de Polignac number, because 47357281 - 2¹ = 47357279 is a prime.

It is a super-2 number, since 2×47357281² = 4485424127425922, which contains 22 as substring.

Together with 47357279, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 47357281.

It is not a weakly prime, because it can be changed into another prime (47357221) 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, 23678640 + 23678641.

It is an arithmetic number, because the mean of its divisors is an integer number (23678641).

Almost surely, 2^47357281 is an apocalyptic number.

It is an amenable number.

47357281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47357281 is an equidigital number, since it uses as much as digits as its factorization.

47357281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 37.

The square root of 47357281 is about 6881.6626624676. The cubic root of 47357281 is about 361.7947438911.

The spelling of 47357281 in words is "forty-seven million, three hundred fifty-seven thousand, two hundred eighty-one".