56013 has 4 divisors (see below), whose sum is σ = 74688. Its totient is φ = 37340.

The previous prime is 56009. The next prime is 56039. The reversal of 56013 is 31065.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56013 - 2² = 56009 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 55983 and 56001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9333 + ... + 9338.

It is an arithmetic number, because the mean of its divisors is an integer number (18672).

2⁵⁶⁰¹³ is an apocalyptic number.

It is an amenable number.

56013 is a deficient number, since it is larger than the sum of its proper divisors (18675).

56013 is a wasteful number, since it uses less digits than its factorization.

56013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18674.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 56013 is about 236.6706572434. The cubic root of 56013 is about 38.2615839151.

Adding to 56013 its reverse (31065), we get a palindrome (87078).

The spelling of 56013 in words is "fifty-six thousand, thirteen".