47799281 has 2 divisors, whose sum is σ = 47799282. Its totient is φ = 47799280.

The previous prime is 47799277. The next prime is 47799287. The reversal of 47799281 is 18299774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46799281 + 1000000 = 6841^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 47799281 - 2² = 47799277 is a prime.

It is a super-2 number, since 2×47799281² = 4569542528233922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47799287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23899640 + 23899641.

It is an arithmetic number, because the mean of its divisors is an integer number (23899641).

Almost surely, 2^47799281 is an apocalyptic number.

It is an amenable number.

47799281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47799281 is an equidigital number, since it uses as much as digits as its factorization.

47799281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 47.

The square root of 47799281 is about 6913.7024089846. The cubic root of 47799281 is about 362.9168405052.

The spelling of 47799281 in words is "forty-seven million, seven hundred ninety-nine thousand, two hundred eighty-one".