265921841 has 2 divisors, whose sum is σ = 265921842. Its totient is φ = 265921840.

The previous prime is 265921787. The next prime is 265921867. The reversal of 265921841 is 148129562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233203441 + 32718400 = 15271^2 + 5720^2 .

It is a cyclic number.

It is not a de Polignac number, because 265921841 - 2¹⁴ = 265905457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265921795 and 265921804.

It is not a weakly prime, because it can be changed into another prime (265981841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132960920 + 132960921.

It is an arithmetic number, because the mean of its divisors is an integer number (132960921).

Almost surely, 2^265921841 is an apocalyptic number.

It is an amenable number.

265921841 is a deficient number, since it is larger than the sum of its proper divisors (1).

265921841 is an equidigital number, since it uses as much as digits as its factorization.

265921841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 265921841 is about 16307.1101363792. The cubic root of 265921841 is about 643.0597632034.

The spelling of 265921841 in words is "two hundred sixty-five million, nine hundred twenty-one thousand, eight hundred forty-one".