1563424273 has 2 divisors, whose sum is σ = 1563424274. Its totient is φ = 1563424272.

The previous prime is 1563424237. The next prime is 1563424339. The reversal of 1563424273 is 3724243651.

Together with previous prime (1563424237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1375816464 + 187607809 = 37092^2 + 13697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1563424273 - 2¹³ = 1563416081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1563424223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781712136 + 781712137.

It is an arithmetic number, because the mean of its divisors is an integer number (781712137).

Almost surely, 2^1563424273 is an apocalyptic number.

It is an amenable number.

1563424273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563424273 is an equidigital number, since it uses as much as digits as its factorization.

1563424273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 1563424273 is about 39540.1602551128. The cubic root of 1563424273 is about 1160.6259683819.

The spelling of 1563424273 in words is "one billion, five hundred sixty-three million, four hundred twenty-four thousand, two hundred seventy-three".