54511121550 has 96 divisors (see below), whose sum is σ = 139000103424. Its totient is φ = 14128992000.

The previous prime is 54511121527. The next prime is 54511121551. The reversal of 54511121550 is 5512111545.

54511121550 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54511121551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1650297 + ... + 1683003.

It is an arithmetic number, because the mean of its divisors is an integer number (1447917744).

Almost surely, 2^54511121550 is an apocalyptic number.

54511121550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 54511121550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69500051712).

54511121550 is an abundant number, since it is smaller than the sum of its proper divisors (84488981874).

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

54511121550 is a wasteful number, since it uses less digits than its factorization.

54511121550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33034 (or 33029 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 54511121550 in words is "fifty-four billion, five hundred eleven million, one hundred twenty-one thousand, five hundred fifty".