55020300 has 72 divisors (see below), whose sum is σ = 160062672. Its totient is φ = 14592000.

The previous prime is 55020299. The next prime is 55020311. The reversal of 55020300 is 302055.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 55020300.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71920 + ... + 72680.

Almost surely, 2^55020300 is an apocalyptic number.

55020300 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 55020300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80031336).

55020300 is an abundant number, since it is smaller than the sum of its proper divisors (105042372).

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

55020300 is a wasteful number, since it uses less digits than its factorization.

55020300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 55020300 is about 7417.5669865529. The cubic root of 55020300 is about 380.3420281604.

Adding to 55020300 its reverse (302055), we get a palindrome (55322355).

The spelling of 55020300 in words is "fifty-five million, twenty thousand, three hundred".