563260261 has 2 divisors, whose sum is σ = 563260262. Its totient is φ = 563260260.

The previous prime is 563260259. The next prime is 563260273. The reversal of 563260261 is 162062365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 524135236 + 39125025 = 22894^2 + 6255^2 .

It is a cyclic number.

It is not a de Polignac number, because 563260261 - 2¹ = 563260259 is a prime.

Together with 563260259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563260211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281630130 + 281630131.

It is an arithmetic number, because the mean of its divisors is an integer number (281630131).

Almost surely, 2^563260261 is an apocalyptic number.

It is an amenable number.

563260261 is a deficient number, since it is larger than the sum of its proper divisors (1).

563260261 is an equidigital number, since it uses as much as digits as its factorization.

563260261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 563260261 is about 23733.1047484310. The cubic root of 563260261 is about 825.8535450230.

The spelling of 563260261 in words is "five hundred sixty-three million, two hundred sixty thousand, two hundred sixty-one".