260405513 has 2 divisors, whose sum is σ = 260405514. Its totient is φ = 260405512.

The previous prime is 260405491. The next prime is 260405533. The reversal of 260405513 is 315504062.

260405513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258984649 + 1420864 = 16093^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 260405513 - 2¹² = 260401417 is a prime.

It is a super-2 number, since 2×260405513² = 135622062401586338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (260405533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130202756 + 130202757.

It is an arithmetic number, because the mean of its divisors is an integer number (130202757).

Almost surely, 2^260405513 is an apocalyptic number.

It is an amenable number.

260405513 is a deficient number, since it is larger than the sum of its proper divisors (1).

260405513 is an equidigital number, since it uses as much as digits as its factorization.

260405513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 260405513 is about 16137.0850217752. The cubic root of 260405513 is about 638.5820765605.

Adding to 260405513 its reverse (315504062), we get a palindrome (575909575).

The spelling of 260405513 in words is "two hundred sixty million, four hundred five thousand, five hundred thirteen".