481665571 has 2 divisors, whose sum is σ = 481665572. Its totient is φ = 481665570.

The previous prime is 481665533. The next prime is 481665617. The reversal of 481665571 is 175566184.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 481665571 - 2¹⁵ = 481632803 is a prime.

It is not a weakly prime, because it can be changed into another prime (481665511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240832785 + 240832786.

It is an arithmetic number, because the mean of its divisors is an integer number (240832786).

Almost surely, 2^481665571 is an apocalyptic number.

481665571 is a deficient number, since it is larger than the sum of its proper divisors (1).

481665571 is an equidigital number, since it uses as much as digits as its factorization.

481665571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 481665571 is about 21946.8806667371. The cubic root of 481665571 is about 783.8781063748.

The spelling of 481665571 in words is "four hundred eighty-one million, six hundred sixty-five thousand, five hundred seventy-one".