55252780500 has 48 divisors (see below), whose sum is σ = 160896101184. Its totient is φ = 14734074400.

The previous prime is 55252780493. The next prime is 55252780549. The reversal of 55252780500 is 508725255.

55252780500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18416094 + ... + 18419093.

It is an arithmetic number, because the mean of its divisors is an integer number (3352002108).

Almost surely, 2^55252780500 is an apocalyptic number.

55252780500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55252780500 is an abundant number, since it is smaller than the sum of its proper divisors (105643320684).

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

55252780500 is a wasteful number, since it uses less digits than its factorization.

55252780500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36835209 (or 36835197 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 39.

The spelling of 55252780500 in words is "fifty-five billion, two hundred fifty-two million, seven hundred eighty thousand, five hundred".