56821168 has 10 divisors (see below), whose sum is σ = 110091044. Its totient is φ = 28410576.

The previous prime is 56821147. The next prime is 56821169. The reversal of 56821168 is 86112865.

It is not an unprimeable number, because it can be changed into a prime (56821169) 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 as a sum of consecutive naturals, namely, 1775646 + ... + 1775677.

Almost surely, 2^56821168 is an apocalyptic number.

It is an amenable number.

56821168 is a deficient number, since it is larger than the sum of its proper divisors (53269876).

56821168 is a wasteful number, since it uses less digits than its factorization.

56821168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551331 (or 3551325 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 56821168 is about 7537.9816927345. The cubic root of 56821168 is about 384.4472147835.

It can be divided in two parts, 568 and 21168, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 56821168 in words is "fifty-six million, eight hundred twenty-one thousand, one hundred sixty-eight".