481481509 has 2 divisors, whose sum is σ = 481481510. Its totient is φ = 481481508.

The previous prime is 481481453. The next prime is 481481579. The reversal of 481481509 is 905184184.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467208225 + 14273284 = 21615^2 + 3778^2 .

It is a cyclic number.

It is not a de Polignac number, because 481481509 - 2¹⁵ = 481448741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481481579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240740754 + 240740755.

It is an arithmetic number, because the mean of its divisors is an integer number (240740755).

Almost surely, 2^481481509 is an apocalyptic number.

It is an amenable number.

481481509 is a deficient number, since it is larger than the sum of its proper divisors (1).

481481509 is an equidigital number, since it uses as much as digits as its factorization.

481481509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 481481509 is about 21942.6869138672. The cubic root of 481481509 is about 783.7782441722.

The spelling of 481481509 in words is "four hundred eighty-one million, four hundred eighty-one thousand, five hundred nine".