56181646 has 4 divisors (see below), whose sum is σ = 84272472. Its totient is φ = 28090822.

The previous prime is 56181637. The next prime is 56181647. The reversal of 56181646 is 64618165.

56181646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56181647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14045410 + ... + 14045413.

It is an arithmetic number, because the mean of its divisors is an integer number (21068118).

Almost surely, 2^56181646 is an apocalyptic number.

56181646 is a deficient number, since it is larger than the sum of its proper divisors (28090826).

56181646 is a wasteful number, since it uses less digits than its factorization.

56181646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28090825.

The product of its digits is 34560, while the sum is 37.

The square root of 56181646 is about 7495.4416814488. The cubic root of 56181646 is about 382.9994523553. Note that the first 3 decimals are identical.

The spelling of 56181646 in words is "fifty-six million, one hundred eighty-one thousand, six hundred forty-six".