56102013 has 18 divisors (see below), whose sum is σ = 89074622. Its totient is φ = 34000560.

The previous prime is 56102009. The next prime is 56102029. The reversal of 56102013 is 31020165.

56102013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55621764 + 480249 = 7458^2 + 693^2 .

It is not a de Polignac number, because 56102013 - 2² = 56102009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56102093) 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 17 ways as a sum of consecutive naturals, for example, 24670 + ... + 26847.

Almost surely, 2^56102013 is an apocalyptic number.

It is an amenable number.

56102013 is a deficient number, since it is larger than the sum of its proper divisors (32972609).

56102013 is a wasteful number, since it uses less digits than its factorization.

56102013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51545 (or 51531 counting only the distinct ones).

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

The square root of 56102013 is about 7490.1277025162. The cubic root of 56102013 is about 382.8184097369.

Adding to 56102013 its reverse (31020165), we get a palindrome (87122178).

The spelling of 56102013 in words is "fifty-six million, one hundred two thousand, thirteen".