481646021 has 2 divisors, whose sum is σ = 481646022. Its totient is φ = 481646020.

The previous prime is 481646003. The next prime is 481646027. The reversal of 481646021 is 120646184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388523521 + 93122500 = 19711^2 + 9650^2 .

It is a cyclic number.

It is not a de Polignac number, because 481646021 - 2¹⁰ = 481644997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481646027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240823010 + 240823011.

It is an arithmetic number, because the mean of its divisors is an integer number (240823011).

Almost surely, 2^481646021 is an apocalyptic number.

It is an amenable number.

481646021 is a deficient number, since it is larger than the sum of its proper divisors (1).

481646021 is an equidigital number, since it uses as much as digits as its factorization.

481646021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 481646021 is about 21946.4352686262. The cubic root of 481646021 is about 783.8675007975.

The spelling of 481646021 in words is "four hundred eighty-one million, six hundred forty-six thousand, twenty-one".