55023200 has 72 divisors (see below), whose sum is σ = 135772560. Its totient is φ = 21772800.

The previous prime is 55023191. The next prime is 55023251. The reversal of 55023200 is 232055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86885 + ... + 87515.

It is an arithmetic number, because the mean of its divisors is an integer number (1885730).

Almost surely, 2^55023200 is an apocalyptic number.

55023200 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 55023200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67886280).

55023200 is an abundant number, since it is smaller than the sum of its proper divisors (80749360).

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

55023200 is a wasteful number, since it uses less digits than its factorization.

55023200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 55023200 is about 7417.7624658653. The cubic root of 55023200 is about 380.3487103759.

Adding to 55023200 its reverse (232055), we get a palindrome (55255255).

It can be divided in two parts, 5 and 5023200, that added together give a palindrome (5023205).

The spelling of 55023200 in words is "fifty-five million, twenty-three thousand, two hundred".