487321 has 4 divisors (see below), whose sum is σ = 489600. Its totient is φ = 485044.

The previous prime is 487313. The next prime is 487349. The reversal of 487321 is 123784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487321 - 2³ = 487313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (122400).

2⁴⁸⁷³²¹ is an apocalyptic number.

It is an amenable number.

487321 is a deficient number, since it is larger than the sum of its proper divisors (2279).

487321 is a wasteful number, since it uses less digits than its factorization.

487321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278.

The product of its digits is 1344, while the sum is 25.

The square root of 487321 is about 698.0838058571. The cubic root of 487321 is about 78.6934119377.

It can be divided in two parts, 487 and 321, that added together give a palindrome (808).

The spelling of 487321 in words is "four hundred eighty-seven thousand, three hundred twenty-one".