55587 has 8 divisors (see below), whose sum is σ = 84736.
Its totient is φ = 31752.
The previous prime is 55579. The next prime is 55589. The reversal of 55587 is 78555.
It is a happy number.
55587 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 55587 - 23 = 55579 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (55589) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1303 + ... + 1344.
It is an arithmetic number, because the mean of its divisors is an integer number (10592).
255587 is an apocalyptic number.
55587 is a deficient number, since it is larger than the sum of its proper divisors (29149).
55587 is a wasteful number, since it uses less digits than its factorization.
55587 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2657.
The product of its digits is 7000, while the sum is 30.
The square root of 55587 is about 235.7689546993.
The cubic root of 55587 is about 38.1643390413.
It can be divided in two parts, 5558 and 7, that added together give a triangular number (5565 = T105).
The spelling of 55587 in words is "fifty-five thousand, five hundred eighty-seven".