56021103 has 24 divisors (see below), whose sum is σ = 86110128. Its totient is φ = 34973952.

The previous prime is 56021083. The next prime is 56021111. The reversal of 56021103 is 30112065.

56021103 is a `hidden beast` number, since 560 + 2 + 1 + 103 = 666.

It is not a de Polignac number, because 56021103 - 2¹⁰ = 56020079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56021143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33925 + ... + 35537.

It is an arithmetic number, because the mean of its divisors is an integer number (3587922).

Almost surely, 2^56021103 is an apocalyptic number.

56021103 is a deficient number, since it is larger than the sum of its proper divisors (30089025).

56021103 is a wasteful number, since it uses less digits than its factorization.

56021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 56021103 is about 7484.7246442337. The cubic root of 56021103 is about 382.6342883604.

Adding to 56021103 its reverse (30112065), we get a palindrome (86133168).

The spelling of 56021103 in words is "fifty-six million, twenty-one thousand, one hundred three".