506565487 has 2 divisors, whose sum is σ = 506565488. Its totient is φ = 506565486.

The previous prime is 506565463. The next prime is 506565491. The reversal of 506565487 is 784565605.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506565487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506565407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253282743 + 253282744.

It is an arithmetic number, because the mean of its divisors is an integer number (253282744).

Almost surely, 2^506565487 is an apocalyptic number.

506565487 is a deficient number, since it is larger than the sum of its proper divisors (1).

506565487 is an equidigital number, since it uses as much as digits as its factorization.

506565487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The square root of 506565487 is about 22507.0097303040. The cubic root of 506565487 is about 797.1594505147.

The spelling of 506565487 in words is "five hundred six million, five hundred sixty-five thousand, four hundred eighty-seven".