5678181 has 14 divisors (see below), whose sum is σ = 8514470. Its totient is φ = 3784968.

The previous prime is 5678173. The next prime is 5678191. The reversal of 5678181 is 1818765.

It can be written as a sum of positive squares in only one way, i.e., 5022081 + 656100 = 2241^2 + 810^2 .

It is not a de Polignac number, because 5678181 - 2³ = 5678173 is a prime.

It is a super-2 number, since 2×5678181² = 64483478937522, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

5678181 is a modest number, since divided by 8181 gives 567 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5678191) 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 13 ways as a sum of consecutive naturals, for example, 3166 + ... + 4623.

Almost surely, 2^5678181 is an apocalyptic number.

It is an amenable number.

5678181 is a deficient number, since it is larger than the sum of its proper divisors (2836289).

5678181 is an frugal number, since it uses more digits than its factorization.

5678181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807 (or 7792 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 5678181 is about 2382.8934092821. The cubic root of 5678181 is about 178.4033796708.

The spelling of 5678181 in words is "five million, six hundred seventy-eight thousand, one hundred eighty-one".