5531403644 has 48 divisors (see below), whose sum is σ = 10782932160. Its totient is φ = 2466408960.

The previous prime is 5531403643. The next prime is 5531403677. The reversal of 5531403644 is 4463041355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531403643) 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, 207002 + ... + 232190.

It is an arithmetic number, because the mean of its divisors is an integer number (224644420).

Almost surely, 2^5531403644 is an apocalyptic number.

It is an amenable number.

5531403644 is a deficient number, since it is larger than the sum of its proper divisors (5251528516).

5531403644 is a wasteful number, since it uses less digits than its factorization.

5531403644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25350 (or 25348 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 5531403644 is about 74373.4068333568. The cubic root of 5531403644 is about 1768.5273635310.

Adding to 5531403644 its reverse (4463041355), we get a palindrome (9994444999).

The spelling of 5531403644 in words is "five billion, five hundred thirty-one million, four hundred three thousand, six hundred forty-four".