5621500720 has 40 divisors (see below), whose sum is σ = 14258172240. Its totient is φ = 2044181760.

The previous prime is 5621500711. The next prime is 5621500739. The reversal of 5621500720 is 270051265.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3193155 + ... + 3194914.

It is an arithmetic number, because the mean of its divisors is an integer number (356454306).

Almost surely, 2^5621500720 is an apocalyptic number.

It is an amenable number.

5621500720 is an abundant number, since it is smaller than the sum of its proper divisors (8636671520).

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

5621500720 is a wasteful number, since it uses less digits than its factorization.

5621500720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388093 (or 6388087 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 5621500720 is about 74976.6678374013. The cubic root of 5621500720 is about 1778.0777886162.

Adding to 5621500720 its reverse (270051265), we get a palindrome (5891551985).

The spelling of 5621500720 in words is "five billion, six hundred twenty-one million, five hundred thousand, seven hundred twenty".