55144200 has 96 divisors (see below), whose sum is σ = 173426400. Its totient is φ = 14492160.

The previous prime is 55144169. The next prime is 55144211. The reversal of 55144200 is 244155.

It is a congruent number.

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, 43171 + ... + 44429.

It is an arithmetic number, because the mean of its divisors is an integer number (1806525).

Almost surely, 2^55144200 is an apocalyptic number.

55144200 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 55144200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86713200).

55144200 is an abundant number, since it is smaller than the sum of its proper divisors (118282200).

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

55144200 is a wasteful number, since it uses less digits than its factorization.

55144200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 55144200 is about 7425.9140851480. The cubic root of 55144200 is about 380.6273110372.

Adding to 55144200 its reverse (244155), we get a palindrome (55388355).

The spelling of 55144200 in words is "fifty-five million, one hundred forty-four thousand, two hundred".