481565569 has 2 divisors, whose sum is σ = 481565570. Its totient is φ = 481565568.

The previous prime is 481565543. The next prime is 481565573. The reversal of 481565569 is 965565184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476330625 + 5234944 = 21825^2 + 2288^2 .

It is a cyclic number.

It is not a de Polignac number, because 481565569 - 2²¹ = 479468417 is a prime.

It is a super-2 number, since 2×481565569² = 463810794492587522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (481565519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240782784 + 240782785.

It is an arithmetic number, because the mean of its divisors is an integer number (240782785).

Almost surely, 2^481565569 is an apocalyptic number.

It is an amenable number.

481565569 is a deficient number, since it is larger than the sum of its proper divisors (1).

481565569 is an equidigital number, since it uses as much as digits as its factorization.

481565569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 49.

The square root of 481565569 is about 21944.6022748192. The cubic root of 481565569 is about 783.8238537918.

The spelling of 481565569 in words is "four hundred eighty-one million, five hundred sixty-five thousand, five hundred sixty-nine".