1563161047 has 4 divisors (see below), whose sum is σ = 1786469776. Its totient is φ = 1339852320.

The previous prime is 1563161021. The next prime is 1563161053. The reversal of 1563161047 is 7401613651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7401613651 = 57503 ⋅128717.

It is a cyclic number.

It is not a de Polignac number, because 1563161047 - 2¹¹ = 1563158999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563161077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111654354 + ... + 111654367.

It is an arithmetic number, because the mean of its divisors is an integer number (446617444).

Almost surely, 2^1563161047 is an apocalyptic number.

1563161047 is a deficient number, since it is larger than the sum of its proper divisors (223308729).

1563161047 is an equidigital number, since it uses as much as digits as its factorization.

1563161047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223308728.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1563161047 is about 39536.8315245418. The cubic root of 1563161047 is about 1160.5608284444.

Adding to 1563161047 its reverse (7401613651), we get a palindrome (8964774698).

The spelling of 1563161047 in words is "one billion, five hundred sixty-three million, one hundred sixty-one thousand, forty-seven".