265261 has 2 divisors, whose sum is σ = 265262. Its totient is φ = 265260.

The previous prime is 265249. The next prime is 265271. The reversal of 265261 is 162562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265225 + 36 = 515^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 265261 - 2⁹ = 264749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132630 + 132631.

It is an arithmetic number, because the mean of its divisors is an integer number (132631).

2²⁶⁵²⁶¹ is an apocalyptic number.

It is an amenable number.

265261 is a deficient number, since it is larger than the sum of its proper divisors (1).

265261 is an equidigital number, since it uses as much as digits as its factorization.

265261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 265261 is about 515.0349502704. The cubic root of 265261 is about 64.2526633162.

The spelling of 265261 in words is "two hundred sixty-five thousand, two hundred sixty-one".