5521020720 has 40 divisors (see below), whose sum is σ = 17115164976. Its totient is φ = 1472272128.

The previous prime is 5521020719. The next prime is 5521020721. The reversal of 5521020720 is 270201255.

It is an interprime number because it is at equal distance from previous prime (5521020719) and next prime (5521020721).

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (5521020721) 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, 11501887 + ... + 11502366.

Almost surely, 2^5521020720 is an apocalyptic number.

It is an amenable number.

5521020720 is an abundant number, since it is smaller than the sum of its proper divisors (11594144256).

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

5521020720 is a wasteful number, since it uses less digits than its factorization.

5521020720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23004269 (or 23004263 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 5521020720 is about 74303.5713811927. The cubic root of 5521020720 is about 1767.4201107303.

Adding to 5521020720 its reverse (270201255), we get a palindrome (5791221975).

The spelling of 5521020720 in words is "five billion, five hundred twenty-one million, twenty thousand, seven hundred twenty".