55785375500 has 24 divisors (see below), whose sum is σ = 121835261184. Its totient is φ = 22314150000.

The previous prime is 55785375497. The next prime is 55785375511. The reversal of 55785375500 is 557358755.

It is a super-2 number, since 2×55785375500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55784876 + ... + 55785875.

It is an arithmetic number, because the mean of its divisors is an integer number (5076469216).

Almost surely, 2^55785375500 is an apocalyptic number.

55785375500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55785375500 is an abundant number, since it is smaller than the sum of its proper divisors (66049885684).

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

55785375500 is a wasteful number, since it uses less digits than its factorization.

55785375500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111570770 (or 111570758 counting only the distinct ones).

The product of its (nonzero) digits is 3675000, while the sum is 50.

The spelling of 55785375500 in words is "fifty-five billion, seven hundred eighty-five million, three hundred seventy-five thousand, five hundred".