47085281 has 2 divisors, whose sum is σ = 47085282. Its totient is φ = 47085280.

The previous prime is 47085271. The next prime is 47085323. The reversal of 47085281 is 18258074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36300625 + 10784656 = 6025^2 + 3284^2 .

It is a cyclic number.

It is not a de Polignac number, because 47085281 - 2⁶ = 47085217 is a prime.

It is a super-2 number, since 2×47085281² = 4434047373697922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47085251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23542640 + 23542641.

It is an arithmetic number, because the mean of its divisors is an integer number (23542641).

Almost surely, 2^47085281 is an apocalyptic number.

It is an amenable number.

47085281 is a deficient number, since it is larger than the sum of its proper divisors (1).

47085281 is an equidigital number, since it uses as much as digits as its factorization.

47085281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 47085281 is about 6861.8715377075. The cubic root of 47085281 is about 361.1007486801.

The spelling of 47085281 in words is "forty-seven million, eighty-five thousand, two hundred eighty-one".