1587 has 6 divisors (see below), whose sum is σ = 2212.
Its totient is φ = 1012.
The previous prime is 1583. The next prime is 1597. The reversal of 1587 is 7851.
It is a happy number.
1587 is nontrivially palindromic in base 5.
It is not a de Polignac number, because 1587 - 22 = 1583 is a prime.
It is a Duffinian number.
1587 is a lucky number.
It is a nialpdrome in base 13 and base 16.
It is a zygodrome in base 2.
It is not an unprimeable number, because it can be changed into a prime (1583) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58 + ... + 80.
21587 is an apocalyptic number.
1587 is a deficient number, since it is larger than the sum of its proper divisors (625).
1587 is an equidigital number, since it uses as much as digits as its factorization.
1587 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49 (or 26 counting only the distinct ones).
The product of its digits is 280, while the sum is 21.
The square root of 1587 is about 39.8371685741.
The cubic root of 1587 is about 11.6643079132.
The spelling of 1587 in words is "one thousand, five hundred eighty-seven".