487509 has 24 divisors (see below), whose sum is σ = 766080. Its totient is φ = 274560.

The previous prime is 487507. The next prime is 487561. The reversal of 487509 is 905784.

It is not a de Polignac number, because 487509 - 2¹ = 487507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 487509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6132 + ... + 6210.

It is an arithmetic number, because the mean of its divisors is an integer number (31920).

487509 is a Friedman number, since it can be written as 9+780*5^4, using all its digits and the basic arithmetic operations.

2⁴⁸⁷⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

487509 is a deficient number, since it is larger than the sum of its proper divisors (278571).

487509 is a wasteful number, since it uses less digits than its factorization.

487509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 487509 is about 698.2184471926. The cubic root of 487509 is about 78.7035301550.

It can be divided in two parts, 48 and 7509, that added together give a palindrome (7557).

The spelling of 487509 in words is "four hundred eighty-seven thousand, five hundred nine".