5501550780 has 480 divisors, whose sum is σ = 20326699008. Its totient is φ = 1231718400.

The previous prime is 5501550773. The next prime is 5501550781. The reversal of 5501550780 is 870551055.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5501550781) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 12705444 + ... + 12705876.

Almost surely, 2^5501550780 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 5501550780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10163349504).

5501550780 is an abundant number, since it is smaller than the sum of its proper divisors (14825148228).

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

5501550780 is a wasteful number, since it uses less digits than its factorization.

5501550780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 36.

The square root of 5501550780 is about 74172.4394906895. The cubic root of 5501550780 is about 1765.3400549089.

The spelling of 5501550780 in words is "five billion, five hundred one million, five hundred fifty thousand, seven hundred eighty".