565655231 has 2 divisors, whose sum is σ = 565655232. Its totient is φ = 565655230.

The previous prime is 565655203. The next prime is 565655267. The reversal of 565655231 is 132556565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565655231 - 2²² = 561460927 is a prime.

It is a super-2 number, since 2×565655231² = 639931680715326722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565655291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282827615 + 282827616.

It is an arithmetic number, because the mean of its divisors is an integer number (282827616).

Almost surely, 2^565655231 is an apocalyptic number.

565655231 is a deficient number, since it is larger than the sum of its proper divisors (1).

565655231 is an equidigital number, since it uses as much as digits as its factorization.

565655231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 38.

The square root of 565655231 is about 23783.5075419922. The cubic root of 565655231 is about 827.0223935310.

The spelling of 565655231 in words is "five hundred sixty-five million, six hundred fifty-five thousand, two hundred thirty-one".