56423 has 4 divisors (see below), whose sum is σ = 59760.
Its totient is φ = 53088.
The previous prime is 56417. The next prime is 56431. The reversal of 56423 is 32465.
Adding to 56423 its reverse (32465), we get a palindrome (88888).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 56423 - 26 = 56359 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 56395 and 56404.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (56443) 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, 1643 + ... + 1676.
It is an arithmetic number, because the mean of its divisors is an integer number (14940).
256423 is an apocalyptic number.
56423 is a deficient number, since it is larger than the sum of its proper divisors (3337).
56423 is a wasteful number, since it uses less digits than its factorization.
56423 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3336.
The product of its digits is 720, while the sum is 20.
The square root of 56423 is about 237.5352605404.
The cubic root of 56423 is about 38.3547118725.
The spelling of 56423 in words is "fifty-six thousand, four hundred twenty-three".