55910000 has 50 divisors (see below), whose sum is σ = 135387912. Its totient is φ = 22360000.

The previous prime is 55909969. The next prime is 55910017. The reversal of 55910000 is 1955.

55910000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (20).

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 9 ways as a sum of consecutive naturals, for example, 7205 + ... + 12795.

Almost surely, 2^55910000 is an apocalyptic number.

55910000 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 55910000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67693956).

55910000 is an abundant number, since it is smaller than the sum of its proper divisors (79477912).

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

55910000 is an equidigital number, since it uses as much as digits as its factorization.

55910000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619 (or 5598 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 55910000 is about 7477.2989775720. The cubic root of 55910000 is about 382.3811697456.

Adding to 55910000 its reverse (1955), we get a palindrome (55911955).

The spelling of 55910000 in words is "fifty-five million, nine hundred ten thousand".