55033451728 has 40 divisors (see below), whose sum is σ = 110579563080. Its totient is φ = 26501529600.

The previous prime is 55033451701. The next prime is 55033451783. The reversal of 55033451728 is 82715433055.

55033451728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 31029527104 + 24003924624 = 176152^2 + 154932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38176 + ... + 333952.

It is an arithmetic number, because the mean of its divisors is an integer number (2764489077).

Almost surely, 2^55033451728 is an apocalyptic number.

55033451728 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55033451728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55289781540).

55033451728 is an abundant number, since it is smaller than the sum of its proper divisors (55546111352).

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

55033451728 is a wasteful number, since it uses less digits than its factorization.

55033451728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296215 (or 296209 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 55033451728 in words is "fifty-five billion, thirty-three million, four hundred fifty-one thousand, seven hundred twenty-eight".