260513111 has 4 divisors (see below), whose sum is σ = 271839792. Its totient is φ = 249186432.

The previous prime is 260513101. The next prime is 260513131. The reversal of 260513111 is 111315062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111315062 = 2 ⋅55657531.

It is a cyclic number.

It is not a de Polignac number, because 260513111 - 2¹⁴ = 260496727 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 (260513101) 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 in 3 ways as a sum of consecutive naturals, for example, 5663306 + ... + 5663351.

It is an arithmetic number, because the mean of its divisors is an integer number (67959948).

Almost surely, 2^260513111 is an apocalyptic number.

260513111 is a deficient number, since it is larger than the sum of its proper divisors (11326681).

260513111 is a wasteful number, since it uses less digits than its factorization.

260513111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11326680.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 260513111 is about 16140.4185509546. The cubic root of 260513111 is about 638.6700172139.

Adding to 260513111 its reverse (111315062), we get a palindrome (371828173).

The spelling of 260513111 in words is "two hundred sixty million, five hundred thirteen thousand, one hundred eleven".