260557313 has 2 divisors, whose sum is σ = 260557314. Its totient is φ = 260557312.

The previous prime is 260557309. The next prime is 260557333. The reversal of 260557313 is 313755062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170250304 + 90307009 = 13048^2 + 9503^2 .

It is a cyclic number.

It is not a de Polignac number, because 260557313 - 2² = 260557309 is a prime.

It is a super-2 number, since 2×260557313² = 135780226715559938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 260557313.

It is not a weakly prime, because it can be changed into another prime (260557333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130278656 + 130278657.

It is an arithmetic number, because the mean of its divisors is an integer number (130278657).

Almost surely, 2^260557313 is an apocalyptic number.

It is an amenable number.

260557313 is a deficient number, since it is larger than the sum of its proper divisors (1).

260557313 is an equidigital number, since it uses as much as digits as its factorization.

260557313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 260557313 is about 16141.7877882222. The cubic root of 260557313 is about 638.7061368235.

The spelling of 260557313 in words is "two hundred sixty million, five hundred fifty-seven thousand, three hundred thirteen".