5500001920 has 128 divisors (see below), whose sum is σ = 15076252800. Its totient is φ = 1879511040.

The previous prime is 5500001917. The next prime is 5500001921. The reversal of 5500001920 is 291000055.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×5500001920² = 60500042240007372800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5500001891 and 5500001900.

It is not an unprimeable number, because it can be changed into a prime (5500001921) 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, 1481026 + ... + 1484734.

It is an arithmetic number, because the mean of its divisors is an integer number (117783225).

Almost surely, 2^5500001920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5500001920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7538126400).

5500001920 is an abundant number, since it is smaller than the sum of its proper divisors (9576250880).

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

5500001920 is a wasteful number, since it uses less digits than its factorization.

5500001920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4054 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 5500001920 is about 74161.9978155929. The cubic root of 5500001920 is about 1765.1743730651.

Adding to 5500001920 its reverse (291000055), we get a palindrome (5791001975).

The spelling of 5500001920 in words is "five billion, five hundred million, one thousand, nine hundred twenty".