55055600 has 30 divisors (see below), whose sum is σ = 132272040. Its totient is φ = 22022080.

The previous prime is 55055591. The next prime is 55055603. The reversal of 55055600 is 655055.

It is a super-2 number, since 2×55055600² = 6062238182720000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55055600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55055603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68420 + ... + 69219.

It is an arithmetic number, because the mean of its divisors is an integer number (4409068).

Almost surely, 2^55055600 is an apocalyptic number.

55055600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55055600 is an abundant number, since it is smaller than the sum of its proper divisors (77216440).

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

55055600 is a wasteful number, since it uses less digits than its factorization.

55055600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137657 (or 137646 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 55055600 is about 7419.9460914484. The cubic root of 55055600 is about 380.4233508922.

It can be divided in two parts, 55055 and 600, that added together give a palindrome (55655).

The spelling of 55055600 in words is "fifty-five million, fifty-five thousand, six hundred".