563530381 has 2 divisors, whose sum is σ = 563530382. Its totient is φ = 563530380.

The previous prime is 563530379. The next prime is 563530439. The reversal of 563530381 is 183035365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395413225 + 168117156 = 19885^2 + 12966^2 .

It is a cyclic number.

It is not a de Polignac number, because 563530381 - 2¹ = 563530379 is a prime.

It is a super-2 number, since 2×563530381² = 635132980620010322, which contains 22 as substring.

Together with 563530379, 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 (563530081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281765190 + 281765191.

It is an arithmetic number, because the mean of its divisors is an integer number (281765191).

Almost surely, 2^563530381 is an apocalyptic number.

It is an amenable number.

563530381 is a deficient number, since it is larger than the sum of its proper divisors (1).

563530381 is an equidigital number, since it uses as much as digits as its factorization.

563530381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 563530381 is about 23738.7948514662. The cubic root of 563530381 is about 825.9855407889.

The spelling of 563530381 in words is "five hundred sixty-three million, five hundred thirty thousand, three hundred eighty-one".