56446891 has 8 divisors (see below), whose sum is σ = 59487120. Its totient is φ = 53413632.

The previous prime is 56446799. The next prime is 56446909. The reversal of 56446891 is 19864465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56446891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56446591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28551 + ... + 30463.

It is an arithmetic number, because the mean of its divisors is an integer number (7435890).

Almost surely, 2^56446891 is an apocalyptic number.

56446891 is a deficient number, since it is larger than the sum of its proper divisors (3040229).

56446891 is a wasteful number, since it uses less digits than its factorization.

56446891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485.

The product of its digits is 207360, while the sum is 43.

The square root of 56446891 is about 7513.1146004836. The cubic root of 56446891 is about 383.6012457721.

The spelling of 56446891 in words is "fifty-six million, four hundred forty-six thousand, eight hundred ninety-one".