55030000 has 50 divisors (see below), whose sum is σ = 133257344. Its totient is φ = 22008000.

The previous prime is 55029977. The next prime is 55030009. The reversal of 55030000 is 3055.

55030000 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (55030009) by changing a digit.

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, 7249 + ... + 12751.

Almost surely, 2^55030000 is an apocalyptic number.

55030000 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 55030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66628672).

55030000 is an abundant number, since it is smaller than the sum of its proper divisors (78227344).

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

55030000 is an equidigital number, since it uses as much as digits as its factorization.

55030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5531 (or 5510 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 13.

The square root of 55030000 is about 7418.2208109492. The cubic root of 55030000 is about 380.3643780984.

Adding to 55030000 its reverse (3055), we get a palindrome (55033055).

The spelling of 55030000 in words is "fifty-five million, thirty thousand".