1563553145 has 16 divisors (see below), whose sum is σ = 2339238528. Its totient is φ = 974682240.

The previous prime is 1563553139. The next prime is 1563553151. The reversal of 1563553145 is 5413553651.

It is an interprime number because it is at equal distance from previous prime (1563553139) and next prime (1563553151).

It is not a de Polignac number, because 1563553145 - 2⁸ = 1563552889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1563553099 and 1563553108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030204 + ... + 2030973.

It is an arithmetic number, because the mean of its divisors is an integer number (146202408).

Almost surely, 2^1563553145 is an apocalyptic number.

It is an amenable number.

1563553145 is a deficient number, since it is larger than the sum of its proper divisors (775685383).

1563553145 is a wasteful number, since it uses less digits than its factorization.

1563553145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061200.

The product of its digits is 135000, while the sum is 38.

The square root of 1563553145 is about 39541.7898557969. The cubic root of 1563553145 is about 1160.6578573756.

The spelling of 1563553145 in words is "one billion, five hundred sixty-three million, five hundred fifty-three thousand, one hundred forty-five".