5644431 has 24 divisors (see below), whose sum is σ = 9062160. Its totient is φ = 3470688.

The previous prime is 5644421. The next prime is 5644439. The reversal of 5644431 is 1344465.

5644431 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 5644431 - 2⁵ = 5644399 is a prime.

It is a super-2 number, since 2×5644431² = 63719202627522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

5644431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5644395 and 5644404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3945 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (377590).

Almost surely, 2^5644431 is an apocalyptic number.

5644431 is a deficient number, since it is larger than the sum of its proper divisors (3417729).

5644431 is a wasteful number, since it uses less digits than its factorization.

5644431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272 (or 1253 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 5644431 is about 2375.8011280408. The cubic root of 5644431 is about 178.0492120800.

Adding to 5644431 its reverse (1344465), we get a palindrome (6988896).

The spelling of 5644431 in words is "five million, six hundred forty-four thousand, four hundred thirty-one".