260534891 has 4 divisors (see below), whose sum is σ = 260798784. Its totient is φ = 260271000.

The previous prime is 260534873. The next prime is 260534917. The reversal of 260534891 is 198435062.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260534891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260534831) 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, 130460 + ... + 132441.

It is an arithmetic number, because the mean of its divisors is an integer number (65199696).

Almost surely, 2^260534891 is an apocalyptic number.

260534891 is a deficient number, since it is larger than the sum of its proper divisors (263893).

260534891 is an equidigital number, since it uses as much as digits as its factorization.

260534891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263892.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 260534891 is about 16141.0932405460. The cubic root of 260534891 is about 638.6878152245.

The spelling of 260534891 in words is "two hundred sixty million, five hundred thirty-four thousand, eight hundred ninety-one".