47043281 has 2 divisors, whose sum is σ = 47043282. Its totient is φ = 47043280.

The previous prime is 47043239. The next prime is 47043289. The reversal of 47043281 is 18234074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35760400 + 11282881 = 5980^2 + 3359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47043281 is a prime.

It is a super-2 number, since 2×47043281² = 4426140574489922, 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 (47043289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23521640 + 23521641.

It is an arithmetic number, because the mean of its divisors is an integer number (23521641).

Almost surely, 2^47043281 is an apocalyptic number.

It is an amenable number.

47043281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47043281 is an equidigital number, since it uses as much as digits as its factorization.

47043281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 47043281 is about 6858.8104653795. The cubic root of 47043281 is about 360.9933496318.

The spelling of 47043281 in words is "forty-seven million, forty-three thousand, two hundred eighty-one".