265955213 has 2 divisors, whose sum is σ = 265955214. Its totient is φ = 265955212.

The previous prime is 265955177. The next prime is 265955237. The reversal of 265955213 is 312559562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259789924 + 6165289 = 16118^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 265955213 - 2¹⁰ = 265954189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265955413) 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, 132977606 + 132977607.

It is an arithmetic number, because the mean of its divisors is an integer number (132977607).

Almost surely, 2^265955213 is an apocalyptic number.

It is an amenable number.

265955213 is a deficient number, since it is larger than the sum of its proper divisors (1).

265955213 is an equidigital number, since it uses as much as digits as its factorization.

265955213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 38.

The square root of 265955213 is about 16308.1333389202. The cubic root of 265955213 is about 643.0866624516.

The spelling of 265955213 in words is "two hundred sixty-five million, nine hundred fifty-five thousand, two hundred thirteen".