55009200 has 60 divisors (see below), whose sum is σ = 176216648. Its totient is φ = 14668800.

The previous prime is 55009193. The next prime is 55009243. The reversal of 55009200 is 290055.

It is a tau number, because it is divible by the number of its divisors (60).

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, 21721 + ... + 24120.

Almost surely, 2^55009200 is an apocalyptic number.

55009200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55009200 is an abundant number, since it is smaller than the sum of its proper divisors (121207448).

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

55009200 is a wasteful number, since it uses less digits than its factorization.

55009200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45862 (or 45851 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 55009200 is about 7416.8187250330. The cubic root of 55009200 is about 380.3164492349.

Adding to 55009200 its reverse (290055), we get a palindrome (55299255).

The spelling of 55009200 in words is "fifty-five million, nine thousand, two hundred".