481538221 has 8 divisors (see below), whose sum is σ = 498124800. Its totient is φ = 465017520.

The previous prime is 481538203. The next prime is 481538227. The reversal of 481538221 is 122835184.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 481538221 - 2⁷ = 481538093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481538227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366 + ... + 31063.

It is an arithmetic number, because the mean of its divisors is an integer number (62265600).

Almost surely, 2^481538221 is an apocalyptic number.

It is an amenable number.

481538221 is a deficient number, since it is larger than the sum of its proper divisors (16586579).

481538221 is a wasteful number, since it uses less digits than its factorization.

481538221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32939.

The product of its digits is 15360, while the sum is 34.

The square root of 481538221 is about 21943.9791514666. The cubic root of 481538221 is about 783.8090157843.

The spelling of 481538221 in words is "four hundred eighty-one million, five hundred thirty-eight thousand, two hundred twenty-one".