487561 has 2 divisors, whose sum is σ = 487562. Its totient is φ = 487560.

The previous prime is 487507. The next prime is 487589. The reversal of 487561 is 165784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447561 + 40000 = 669^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 487561 - 2⁹ = 487049 is a prime.

It is not a weakly prime, because it can be changed into another prime (487261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243780 + 243781.

It is an arithmetic number, because the mean of its divisors is an integer number (243781).

2⁴⁸⁷⁵⁶¹ is an apocalyptic number.

It is an amenable number.

487561 is a deficient number, since it is larger than the sum of its proper divisors (1).

487561 is an equidigital number, since it uses as much as digits as its factorization.

487561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 487561 is about 698.2556838294. The cubic root of 487561 is about 78.7063283516.

The spelling of 487561 in words is "four hundred eighty-seven thousand, five hundred sixty-one".