487221 has 8 divisors (see below), whose sum is σ = 742464. Its totient is φ = 278400.

The previous prime is 487219. The next prime is 487247. The reversal of 487221 is 122784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 487221 - 2¹ = 487219 is a prime.

It is a Curzon number.

487221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 487191 and 487200.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 487221.

It is not an unprimeable number, because it can be changed into a prime (487211) 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 7 ways as a sum of consecutive naturals, for example, 11580 + ... + 11621.

It is an arithmetic number, because the mean of its divisors is an integer number (92808).

2⁴⁸⁷²²¹ is an apocalyptic number.

It is an amenable number.

487221 is a deficient number, since it is larger than the sum of its proper divisors (255243).

487221 is a wasteful number, since it uses less digits than its factorization.

487221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23211.

The product of its digits is 896, while the sum is 24.

The square root of 487221 is about 698.0121775442. The cubic root of 487221 is about 78.6880288469.

The spelling of 487221 in words is "four hundred eighty-seven thousand, two hundred twenty-one".