565511263 has 2 divisors, whose sum is σ = 565511264. Its totient is φ = 565511262.

The previous prime is 565511227. The next prime is 565511291. The reversal of 565511263 is 362115565.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 565511263 - 2¹⁷ = 565380191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565511213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282755631 + 282755632.

It is an arithmetic number, because the mean of its divisors is an integer number (282755632).

Almost surely, 2^565511263 is an apocalyptic number.

565511263 is a deficient number, since it is larger than the sum of its proper divisors (1).

565511263 is an equidigital number, since it uses as much as digits as its factorization.

565511263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 565511263 is about 23780.4807142328. The cubic root of 565511263 is about 826.9522242500.

The spelling of 565511263 in words is "five hundred sixty-five million, five hundred eleven thousand, two hundred sixty-three".