47059781 has 2 divisors, whose sum is σ = 47059782. Its totient is φ = 47059780.

The previous prime is 47059741. The next prime is 47059799. The reversal of 47059781 is 18795074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46648900 + 410881 = 6830^2 + 641^2 .

It is a cyclic number.

It is not a de Polignac number, because 47059781 - 2⁶ = 47059717 is a prime.

It is a super-2 number, since 2×47059781² = 4429245975535922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47059711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23529890 + 23529891.

It is an arithmetic number, because the mean of its divisors is an integer number (23529891).

Almost surely, 2^47059781 is an apocalyptic number.

It is an amenable number.

47059781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47059781 is an equidigital number, since it uses as much as digits as its factorization.

47059781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 47059781 is about 6860.0131924071. The cubic root of 47059781 is about 361.0355497356.

The spelling of 47059781 in words is "forty-seven million, fifty-nine thousand, seven hundred eighty-one".