5707781 has 2 divisors, whose sum is σ = 5707782. Its totient is φ = 5707780.

The previous prime is 5707763. The next prime is 5707811. The reversal of 5707781 is 1877075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4879681 + 828100 = 2209^2 + 910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5707781 is a prime.

It is a super-2 number, since 2×5707781² = 65157527887922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5707711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2853890 + 2853891.

It is an arithmetic number, because the mean of its divisors is an integer number (2853891).

Almost surely, 2^5707781 is an apocalyptic number.

It is an amenable number.

5707781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5707781 is an equidigital number, since it uses as much as digits as its factorization.

5707781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13720, while the sum is 35.

The square root of 5707781 is about 2389.0962726521. The cubic root of 5707781 is about 178.7128444135.

The spelling of 5707781 in words is "five million, seven hundred seven thousand, seven hundred eighty-one".