55000005480 has 256 divisors, whose sum is σ = 221849280000. Its totient is φ = 11831906304.

The previous prime is 55000005433. The next prime is 55000005481. The reversal of 55000005480 is 8450000055.

55000005480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55000005481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85455 + ... + 342494.

It is an arithmetic number, because the mean of its divisors is an integer number (866598750).

Almost surely, 2^55000005480 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 55000005480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110924640000).

55000005480 is an abundant number, since it is smaller than the sum of its proper divisors (166849274520).

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

55000005480 is a wasteful number, since it uses less digits than its factorization.

55000005480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427993 (or 427983 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 55000005480 in words is "fifty-five billion, five thousand, four hundred eighty".