56811042 has 72 divisors (see below), whose sum is σ = 133522896. Its totient is φ = 17449344.

The previous prime is 56811031. The next prime is 56811043. The reversal of 56811042 is 24011865.

56811042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 56810997 and 56811015.

It is not an unprimeable number, because it can be changed into a prime (56811043) 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 in 35 ways as a sum of consecutive naturals, for example, 348453 + ... + 348615.

Almost surely, 2^56811042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56811042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66761448).

56811042 is an abundant number, since it is smaller than the sum of its proper divisors (76711854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56811042 is a wasteful number, since it uses less digits than its factorization.

56811042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 56811042 is about 7537.3099976052. The cubic root of 56811042 is about 384.4243762070.

The spelling of 56811042 in words is "fifty-six million, eight hundred eleven thousand, forty-two".