493221 has 16 divisors (see below), whose sum is σ = 734400. Its totient is φ = 292608.

The previous prime is 493219. The next prime is 493231. The reversal of 493221 is 122394.

It is not a de Polignac number, because 493221 - 2¹ = 493219 is a prime.

It is a nialpdrome in base 14.

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 493221.

It is not an unprimeable number, because it can be changed into a prime (493201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 715 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (45900).

2⁴⁹³²²¹ is an apocalyptic number.

It is an amenable number.

493221 is a deficient number, since it is larger than the sum of its proper divisors (241179).

493221 is a wasteful number, since it uses less digits than its factorization.

493221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548.

The product of its digits is 432, while the sum is 21.

The square root of 493221 is about 702.2969457430. The cubic root of 493221 is about 79.0097194686.

The spelling of 493221 in words is "four hundred ninety-three thousand, two hundred twenty-one".