481866021 has 24 divisors (see below), whose sum is σ = 856652160. Its totient is φ = 254170656.

The previous prime is 481866019. The next prime is 481866029. The reversal of 481866021 is 120668184.

481866021 is a `hidden beast` number, since 48 + 1 + 8 + 6 + 602 + 1 = 666.

It is not a de Polignac number, because 481866021 - 2¹ = 481866019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481866029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293361 + ... + 294998.

It is an arithmetic number, because the mean of its divisors is an integer number (35693840).

Almost surely, 2^481866021 is an apocalyptic number.

It is an amenable number.

481866021 is a deficient number, since it is larger than the sum of its proper divisors (374786139).

481866021 is a wasteful number, since it uses less digits than its factorization.

481866021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588385 (or 588382 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 481866021 is about 21951.4468999198. The cubic root of 481866021 is about 783.9868308952.

The spelling of 481866021 in words is "four hundred eighty-one million, eight hundred sixty-six thousand, twenty-one".