56513 has 4 divisors (see below), whose sum is σ = 58368. Its totient is φ = 54660.

The previous prime is 56509. The next prime is 56519. The reversal of 56513 is 31565.

56513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56513 - 2² = 56509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 6.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (56519) 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, 881 + ... + 942.

It is an arithmetic number, because the mean of its divisors is an integer number (14592).

2⁵⁶⁵¹³ is an apocalyptic number.

It is an amenable number.

56513 is a deficient number, since it is larger than the sum of its proper divisors (1855).

56513 is a wasteful number, since it uses less digits than its factorization.

56513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its digits is 450, while the sum is 20.

The square root of 56513 is about 237.7246306128. The cubic root of 56513 is about 38.3750941652.

The spelling of 56513 in words is "fifty-six thousand, five hundred thirteen".