265592981 has 2 divisors, whose sum is σ = 265592982. Its totient is φ = 265592980.

The previous prime is 265592927. The next prime is 265593047. The reversal of 265592981 is 189295562.

265592981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195720100 + 69872881 = 13990^2 + 8359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265592981 is a prime.

It is a super-2 number, since 2×265592981² = 141079263112932722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265592681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132796490 + 132796491.

It is an arithmetic number, because the mean of its divisors is an integer number (132796491).

Almost surely, 2^265592981 is an apocalyptic number.

It is an amenable number.

265592981 is a deficient number, since it is larger than the sum of its proper divisors (1).

265592981 is an equidigital number, since it uses as much as digits as its factorization.

265592981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 47.

The square root of 265592981 is about 16297.0236853236. The cubic root of 265592981 is about 642.7945676493.

The spelling of 265592981 in words is "two hundred sixty-five million, five hundred ninety-two thousand, nine hundred eighty-one".