4055681 has 12 divisors (see below), whose sum is σ = 4847508. Its totient is φ = 3380832.

The previous prime is 4055671. The next prime is 4055687. The reversal of 4055681 is 1865504.

It is a happy number.

4055681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3441025 + 614656 = 1855^2 + 784^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4055681 is a prime.

It is a super-2 number, since 2×4055681² = 32897096747522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4055687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 695 + ... + 2931.

It is an arithmetic number, because the mean of its divisors is an integer number (403959).

Almost surely, 2^4055681 is an apocalyptic number.

It is an amenable number.

4055681 is a deficient number, since it is larger than the sum of its proper divisors (791827).

4055681 is a wasteful number, since it uses less digits than its factorization.

4055681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288 (or 2281 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 4055681 is about 2013.8721409265. The cubic root of 4055681 is about 159.4732809677.

The spelling of 4055681 in words is "four million, fifty-five thousand, six hundred eighty-one".