55204500 has 192 divisors, whose sum is σ = 183456000. Its totient is φ = 12787200.

The previous prime is 55204493. The next prime is 55204529. The reversal of 55204500 is 540255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370426 + ... + 370574.

It is an arithmetic number, because the mean of its divisors is an integer number (955500).

Almost surely, 2^55204500 is an apocalyptic number.

55204500 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 55204500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91728000).

55204500 is an abundant number, since it is smaller than the sum of its proper divisors (128251500).

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

55204500 is a wasteful number, since it uses less digits than its factorization.

55204500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 55204500 is about 7429.9730820508. The cubic root of 55204500 is about 380.7659987325.

Adding to 55204500 its reverse (540255), we get a palindrome (55744755).

The spelling of 55204500 in words is "fifty-five million, two hundred four thousand, five hundred".