1563427 has 2 divisors, whose sum is σ = 1563428. Its totient is φ = 1563426.

The previous prime is 1563421. The next prime is 1563431. The reversal of 1563427 is 7243651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1563427 - 2¹⁹ = 1039139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1563395 and 1563404.

It is not a weakly prime, because it can be changed into another prime (1563421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781713 + 781714.

It is an arithmetic number, because the mean of its divisors is an integer number (781714).

2^1563427 is an apocalyptic number.

1563427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563427 is an equidigital number, since it uses as much as digits as its factorization.

1563427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 1563427 is about 1250.3707450193. The cubic root of 1563427 is about 116.0626643188.

The spelling of 1563427 in words is "one million, five hundred sixty-three thousand, four hundred twenty-seven".