260511481 has 2 divisors, whose sum is σ = 260511482. Its totient is φ = 260511480.

The previous prime is 260511467. The next prime is 260511533. The reversal of 260511481 is 184115062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260499600 + 11881 = 16140^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260511481 is a prime.

It is a super-2 number, since 2×260511481² = 135732463465626722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (260511401) 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 as a sum of consecutive naturals, namely, 130255740 + 130255741.

It is an arithmetic number, because the mean of its divisors is an integer number (130255741).

Almost surely, 2^260511481 is an apocalyptic number.

It is an amenable number.

260511481 is a deficient number, since it is larger than the sum of its proper divisors (1).

260511481 is an equidigital number, since it uses as much as digits as its factorization.

260511481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 260511481 is about 16140.3680565221. The cubic root of 260511481 is about 638.6686851833.

The spelling of 260511481 in words is "two hundred sixty million, five hundred eleven thousand, four hundred eighty-one".