1563442055 has 16 divisors (see below), whose sum is σ = 2218086720. Its totient is φ = 1035105792.

The previous prime is 1563442051. The next prime is 1563442057. The reversal of 1563442055 is 5502443651.

It is not a de Polignac number, because 1563442055 - 2² = 1563442051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563442051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 769154 + ... + 771183.

It is an arithmetic number, because the mean of its divisors is an integer number (138630420).

Almost surely, 2^1563442055 is an apocalyptic number.

1563442055 is a deficient number, since it is larger than the sum of its proper divisors (654644665).

1563442055 is a wasteful number, since it uses less digits than its factorization.

1563442055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540378.

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 1563442055 is about 39540.3851144624. The cubic root of 1563442055 is about 1160.6303685892.

The spelling of 1563442055 in words is "one billion, five hundred sixty-three million, four hundred forty-two thousand, fifty-five".