5681445 has 32 divisors (see below), whose sum is σ = 11335680. Its totient is φ = 2360640.

The previous prime is 5681413. The next prime is 5681447. The reversal of 5681445 is 5441865.

5681445 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5681445 - 2⁵ = 5681413 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681447) 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 31 ways as a sum of consecutive naturals, for example, 1305 + ... + 3614.

It is an arithmetic number, because the mean of its divisors is an integer number (354240).

Almost surely, 2^5681445 is an apocalyptic number.

5681445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5681445 is a deficient number, since it is larger than the sum of its proper divisors (5654235).

5681445 is a wasteful number, since it uses less digits than its factorization.

5681445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4945.

The product of its digits is 19200, while the sum is 33.

The square root of 5681445 is about 2383.5781925500. The cubic root of 5681445 is about 178.4375571119.

The spelling of 5681445 in words is "five million, six hundred eighty-one thousand, four hundred forty-five".