55153800 has 144 divisors (see below), whose sum is σ = 199557540. Its totient is φ = 13570560.

The previous prime is 55153799. The next prime is 55153811. The reversal of 55153800 is 835155.

It can be written as a sum of positive squares in 6 ways, for example, as 4088484 + 51065316 = 2022^2 + 7146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22222 + ... + 24578.

Almost surely, 2^55153800 is an apocalyptic number.

55153800 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 55153800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99778770).

55153800 is an abundant number, since it is smaller than the sum of its proper divisors (144403740).

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

55153800 is a wasteful number, since it uses less digits than its factorization.

55153800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55153800 is about 7426.5604420889. The cubic root of 55153800 is about 380.6493974347.

Adding to 55153800 its reverse (835155), we get a palindrome (55988955).

The spelling of 55153800 in words is "fifty-five million, one hundred fifty-three thousand, eight hundred".