563551 has 2 divisors, whose sum is σ = 563552. Its totient is φ = 563550.

The previous prime is 563543. The next prime is 563561. The reversal of 563551 is 155365.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 563551 - 2³ = 563543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281775 + 281776.

It is an arithmetic number, because the mean of its divisors is an integer number (281776).

2⁵⁶³⁵⁵¹ is an apocalyptic number.

563551 is a deficient number, since it is larger than the sum of its proper divisors (1).

563551 is an equidigital number, since it uses as much as digits as its factorization.

563551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 25.

The square root of 563551 is about 750.7003396829. The cubic root of 563551 is about 82.5995614655.

The spelling of 563551 in words is "five hundred sixty-three thousand, five hundred fifty-one".