260317261 has 4 divisors (see below), whose sum is σ = 268714624. Its totient is φ = 251919900.

The previous prime is 260317259. The next prime is 260317297. The reversal of 260317261 is 162713062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162713062 = 2 ⋅81356531.

It is a cyclic number.

It is not a de Polignac number, because 260317261 - 2¹ = 260317259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260317061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198635 + ... + 4198696.

It is an arithmetic number, because the mean of its divisors is an integer number (67178656).

Almost surely, 2^260317261 is an apocalyptic number.

It is an amenable number.

260317261 is a deficient number, since it is larger than the sum of its proper divisors (8397363).

260317261 is an equidigital number, since it uses as much as digits as its factorization.

260317261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8397362.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 260317261 is about 16134.3503432893. The cubic root of 260317261 is about 638.5099294538.

The spelling of 260317261 in words is "two hundred sixty million, three hundred seventeen thousand, two hundred sixty-one".