55519800 has 96 divisors (see below), whose sum is σ = 196713600. Its totient is φ = 12689280.

The previous prime is 55519787. The next prime is 55519811. The reversal of 55519800 is 891555.

55519800 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2410 + ... + 10809.

It is an arithmetic number, because the mean of its divisors is an integer number (2049100).

Almost surely, 2^55519800 is an apocalyptic number.

55519800 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 55519800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98356800).

55519800 is an abundant number, since it is smaller than the sum of its proper divisors (141193800).

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

55519800 is a wasteful number, since it uses less digits than its factorization.

55519800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13245 (or 13236 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 55519800 is about 7451.1609833636. The cubic root of 55519800 is about 381.4895368291.

It can be divided in two parts, 5551 and 9800, that added together give a palindrome (15351).

The spelling of 55519800 in words is "fifty-five million, five hundred nineteen thousand, eight hundred".