56163863 has 4 divisors (see below), whose sum is σ = 64187280. Its totient is φ = 48140448.

The previous prime is 56163851. The next prime is 56163871. The reversal of 56163863 is 36836165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56163863 - 2⁶ = 56163799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56163803) 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, 4011698 + ... + 4011711.

It is an arithmetic number, because the mean of its divisors is an integer number (16046820).

Almost surely, 2^56163863 is an apocalyptic number.

56163863 is a deficient number, since it is larger than the sum of its proper divisors (8023417).

56163863 is an equidigital number, since it uses as much as digits as its factorization.

56163863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023416.

The product of its digits is 77760, while the sum is 38.

The square root of 56163863 is about 7494.2553332536. The cubic root of 56163863 is about 382.9590382196.

The spelling of 56163863 in words is "fifty-six million, one hundred sixty-three thousand, eight hundred sixty-three".