487865281 has 2 divisors, whose sum is σ = 487865282. Its totient is φ = 487865280.

The previous prime is 487865267. The next prime is 487865291. The reversal of 487865281 is 182568784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260338225 + 227527056 = 16135^2 + 15084^2 .

It is a cyclic number.

It is not a de Polignac number, because 487865281 - 2⁷ = 487865153 is a prime.

It is a super-2 number, since 2×487865281² = 476025064810417922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (487865291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243932640 + 243932641.

It is an arithmetic number, because the mean of its divisors is an integer number (243932641).

Almost surely, 2^487865281 is an apocalyptic number.

It is an amenable number.

487865281 is a deficient number, since it is larger than the sum of its proper divisors (1).

487865281 is an equidigital number, since it uses as much as digits as its factorization.

487865281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 860160, while the sum is 49.

The square root of 487865281 is about 22087.6726026080. The cubic root of 487865281 is about 787.2269817335.

The spelling of 487865281 in words is "four hundred eighty-seven million, eight hundred sixty-five thousand, two hundred eighty-one".