55216683800 has 48 divisors (see below), whose sum is σ = 128403399960. Its totient is φ = 22082439680.

The previous prime is 55216683749. The next prime is 55216683869. The reversal of 55216683800 is 838661255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1149872 + ... + 1196928.

Almost surely, 2^55216683800 is an apocalyptic number.

55216683800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55216683800 is an abundant number, since it is smaller than the sum of its proper divisors (73186716160).

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

55216683800 is a wasteful number, since it uses less digits than its factorization.

55216683800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52940 (or 52931 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 55216683800 in words is "fifty-five billion, two hundred sixteen million, six hundred eighty-three thousand, eight hundred".