260505559 has 2 divisors, whose sum is σ = 260505560. Its totient is φ = 260505558.

The previous prime is 260505551. The next prime is 260505571. The reversal of 260505559 is 955505062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260505559 - 2³ = 260505551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260505551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130252779 + 130252780.

It is an arithmetic number, because the mean of its divisors is an integer number (130252780).

Almost surely, 2^260505559 is an apocalyptic number.

260505559 is a deficient number, since it is larger than the sum of its proper divisors (1).

260505559 is an equidigital number, since it uses as much as digits as its factorization.

260505559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 260505559 is about 16140.1846024139. The cubic root of 260505559 is about 638.6638456978.

The spelling of 260505559 in words is "two hundred sixty million, five hundred five thousand, five hundred fifty-nine".