480556781 has 2 divisors, whose sum is σ = 480556782. Its totient is φ = 480556780.

The previous prime is 480556679. The next prime is 480556787. The reversal of 480556781 is 187655084.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246772681 + 233784100 = 15709^2 + 15290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-480556781 is a prime.

It is a super-2 number, since 2×480556781² = 461869639530163922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (480556787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240278390 + 240278391.

It is an arithmetic number, because the mean of its divisors is an integer number (240278391).

Almost surely, 2^480556781 is an apocalyptic number.

It is an amenable number.

480556781 is a deficient number, since it is larger than the sum of its proper divisors (1).

480556781 is an equidigital number, since it uses as much as digits as its factorization.

480556781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 480556781 is about 21921.6053472368. The cubic root of 480556781 is about 783.2761506872.

The spelling of 480556781 in words is "four hundred eighty million, five hundred fifty-six thousand, seven hundred eighty-one".