5644263531 has 32 divisors (see below), whose sum is σ = 7804330560. Its totient is φ = 3625703424.

The previous prime is 5644263529. The next prime is 5644263587. The reversal of 5644263531 is 1353624465.

5644263531 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5644263531 - 2¹ = 5644263529 is a prime.

It is a super-2 number, since 2×5644263531² = 63715421614753175922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5644263531.

It is not an unprimeable number, because it can be changed into a prime (5644263931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5922151 + ... + 5923103.

It is an arithmetic number, because the mean of its divisors is an integer number (243885330).

Almost surely, 2^5644263531 is an apocalyptic number.

5644263531 is a deficient number, since it is larger than the sum of its proper divisors (2160067029).

5644263531 is a wasteful number, since it uses less digits than its factorization.

5644263531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its digits is 259200, while the sum is 39.

The square root of 5644263531 is about 75128.3137771639. The cubic root of 5644263531 is about 1780.4745116917.

Adding to 5644263531 its reverse (1353624465), we get a palindrome (6997887996).

The spelling of 5644263531 in words is "five billion, six hundred forty-four million, two hundred sixty-three thousand, five hundred thirty-one".