5771681 has 2 divisors, whose sum is σ = 5771682. Its totient is φ = 5771680.

The previous prime is 5771677. The next prime is 5771683. The reversal of 5771681 is 1861775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5216656 + 555025 = 2284^2 + 745^2 .

It is a cyclic number.

It is not a de Polignac number, because 5771681 - 2² = 5771677 is a prime.

It is a super-2 number, since 2×5771681² = 66624603131522, which contains 22 as substring.

Together with 5771683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5771683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2885840 + 2885841.

It is an arithmetic number, because the mean of its divisors is an integer number (2885841).

Almost surely, 2^5771681 is an apocalyptic number.

It is an amenable number.

5771681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5771681 is an equidigital number, since it uses as much as digits as its factorization.

5771681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 35.

The square root of 5771681 is about 2402.4323091401. The cubic root of 5771681 is about 179.3772823223.

The spelling of 5771681 in words is "five million, seven hundred seventy-one thousand, six hundred eighty-one".