47082281 has 2 divisors, whose sum is σ = 47082282. Its totient is φ = 47082280.

The previous prime is 47082271. The next prime is 47082293. The reversal of 47082281 is 18228074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 5040025 = 6484^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 47082281 - 2¹⁰ = 47081257 is a prime.

It is a super-2 number, since 2×47082281² = 4433482368325922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (47082221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23541140 + 23541141.

It is an arithmetic number, because the mean of its divisors is an integer number (23541141).

Almost surely, 2^47082281 is an apocalyptic number.

It is an amenable number.

47082281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47082281 is an equidigital number, since it uses as much as digits as its factorization.

47082281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 47082281 is about 6861.6529349713. The cubic root of 47082281 is about 361.0930794380.

The spelling of 47082281 in words is "forty-seven million, eighty-two thousand, two hundred eighty-one".