5321644000 has 48 divisors (see below), whose sum is σ = 13075289136. Its totient is φ = 2128656000.

The previous prime is 5321643997. The next prime is 5321644001. The reversal of 5321644000 is 4461235.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321644001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661206 + ... + 669205.

It is an arithmetic number, because the mean of its divisors is an integer number (272401857).

Almost surely, 2^5321644000 is an apocalyptic number.

5321644000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5321644000 is an abundant number, since it is smaller than the sum of its proper divisors (7753645136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5321644000 is a wasteful number, since it uses less digits than its factorization.

5321644000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330436 (or 1330418 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 5321644000 is about 72949.5990393367. The cubic root of 5321644000 is about 1745.8835491290.

The spelling of 5321644000 in words is "five billion, three hundred twenty-one million, six hundred forty-four thousand".