5563991831 has 4 divisors (see below), whose sum is σ = 5572259952. Its totient is φ = 5555723712.

The previous prime is 5563991819. The next prime is 5563991857. The reversal of 5563991831 is 1381993655.

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 5563991831 - 2⁶ = 5563991767 is a prime.

It is a super-2 number, since 2×5563991831² = 61916010190869465122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5563991831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5563931831) 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, 4133051 + ... + 4134396.

It is an arithmetic number, because the mean of its divisors is an integer number (1393064988).

Almost surely, 2^5563991831 is an apocalyptic number.

5563991831 is a deficient number, since it is larger than the sum of its proper divisors (8268121).

5563991831 is an equidigital number, since it uses as much as digits as its factorization.

5563991831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268120.

The product of its digits is 874800, while the sum is 50.

The square root of 5563991831 is about 74592.1700381481. The cubic root of 5563991831 is about 1771.9936499449.

The spelling of 5563991831 in words is "five billion, five hundred sixty-three million, nine hundred ninety-one thousand, eight hundred thirty-one".