487408561 has 2 divisors, whose sum is σ = 487408562. Its totient is φ = 487408560.

The previous prime is 487408529. The next prime is 487408573. The reversal of 487408561 is 165804784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 480486400 + 6922161 = 21920^2 + 2631^2 .

It is a cyclic number.

It is not a de Polignac number, because 487408561 - 2⁵ = 487408529 is a prime.

It is not a weakly prime, because it can be changed into another prime (487408261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243704280 + 243704281.

It is an arithmetic number, because the mean of its divisors is an integer number (243704281).

Almost surely, 2^487408561 is an apocalyptic number.

It is an amenable number.

487408561 is a deficient number, since it is larger than the sum of its proper divisors (1).

487408561 is an equidigital number, since it uses as much as digits as its factorization.

487408561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 487408561 is about 22077.3313831178. The cubic root of 487408561 is about 786.9812482111.

The spelling of 487408561 in words is "four hundred eighty-seven million, four hundred eight thousand, five hundred sixty-one".