56110021 has 16 divisors (see below), whose sum is σ = 65410560. Its totient is φ = 47591280.

The previous prime is 56110001. The next prime is 56110027. The reversal of 56110021 is 12001165.

It is a happy number.

56110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56110021 - 2⁹ = 56109509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56109977 and 56110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56110027) 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 15 ways as a sum of consecutive naturals, for example, 12000 + ... + 16006.

It is an arithmetic number, because the mean of its divisors is an integer number (4088160).

Almost surely, 2^56110021 is an apocalyptic number.

It is an amenable number.

56110021 is a deficient number, since it is larger than the sum of its proper divisors (9300539).

56110021 is a wasteful number, since it uses less digits than its factorization.

56110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 56110021 is about 7490.6622537664. The cubic root of 56110021 is about 382.8366233672.

Adding to 56110021 its reverse (12001165), we get a palindrome (68111186).

The spelling of 56110021 in words is "fifty-six million, one hundred ten thousand, twenty-one".