55200256 has 40 divisors (see below), whose sum is σ = 111269664. Its totient is φ = 27356160.

The previous prime is 55200239. The next prime is 55200269. The reversal of 55200256 is 65200255.

It is a self number, because there is not a number n which added to its sum of digits gives 55200256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66661 + ... + 67483.

Almost surely, 2^55200256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55200256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55634832).

55200256 is an abundant number, since it is smaller than the sum of its proper divisors (56069408).

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

55200256 is an equidigital number, since it uses as much as digits as its factorization.

55200256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55200256 is about 7429.6874766036. The cubic root of 55200256 is about 380.7562409995.

Subtracting 55200256 from its reverse (65200255), we obtain a palindrome (9999999).

The spelling of 55200256 in words is "fifty-five million, two hundred thousand, two hundred fifty-six".