56387 has 4 divisors (see below), whose sum is σ = 57000.
Its totient is φ = 55776.
The previous prime is 56383. The next prime is 56393. The reversal of 56387 is 78365.
56387 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 brilliant number, because the two primes have the same length.
It is a cyclic number.
It is not a de Polignac number, because 56387 - 22 = 56383 is a prime.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a plaindrome in base 14.
It is a nialpdrome in base 16.
It is not an unprimeable number, because it can be changed into a prime (56383) 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, 137 + ... + 362.
It is an arithmetic number, because the mean of its divisors is an integer number (14250).
256387 is an apocalyptic number.
56387 is a deficient number, since it is larger than the sum of its proper divisors (613).
56387 is a wasteful number, since it uses less digits than its factorization.
56387 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 612.
The product of its digits is 5040, while the sum is 29.
The square root of 56387 is about 237.4594702260.
The cubic root of 56387 is about 38.3465528865.
The spelling of 56387 in words is "fifty-six thousand, three hundred eighty-seven".