55107887500 has 72 divisors (see below), whose sum is σ = 120655652544. Its totient is φ = 22022160000.

The previous prime is 55107887491. The next prime is 55107887501. The reversal of 55107887500 is 578870155.

It is a happy number.

55107887500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55107887501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25786432 + ... + 25788568.

It is an arithmetic number, because the mean of its divisors is an integer number (1675772952).

Almost surely, 2^55107887500 is an apocalyptic number.

55107887500 is a gapful number since it is divisible by the number (50) 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 55107887500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60327826272).

55107887500 is an abundant number, since it is smaller than the sum of its proper divisors (65547765044).

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

55107887500 is a wasteful number, since it uses less digits than its factorization.

55107887500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229 (or 4207 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 46.

The spelling of 55107887500 in words is "fifty-five billion, one hundred seven million, eight hundred eighty-seven thousand, five hundred".