481543821 has 48 divisors (see below), whose sum is σ = 778789440. Its totient is φ = 286624800.

The previous prime is 481543813. The next prime is 481543823. The reversal of 481543821 is 128345184.

It is not a de Polignac number, because 481543821 - 2³ = 481543813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481543823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 730390 + ... + 731048.

It is an arithmetic number, because the mean of its divisors is an integer number (16224780).

Almost surely, 2^481543821 is an apocalyptic number.

It is an amenable number.

481543821 is a deficient number, since it is larger than the sum of its proper divisors (297245619).

481543821 is a wasteful number, since it uses less digits than its factorization.

481543821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 734 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 481543821 is about 21944.1067487378. The cubic root of 481543821 is about 783.8120541818.

The spelling of 481543821 in words is "four hundred eighty-one million, five hundred forty-three thousand, eight hundred twenty-one".