55255600 has 30 divisors (see below), whose sum is σ = 132752540. Its totient is φ = 22102080.

The previous prime is 55255589. The next prime is 55255601. The reversal of 55255600 is 655255.

It is not an unprimeable number, because it can be changed into a prime (55255601) 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, 68670 + ... + 69469.

Almost surely, 2^55255600 is an apocalyptic number.

55255600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55255600 is an abundant number, since it is smaller than the sum of its proper divisors (77496940).

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

55255600 is a wasteful number, since it uses less digits than its factorization.

55255600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138157 (or 138146 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55255600 is about 7433.4110608791. The cubic root of 55255600 is about 380.8834477456.

It can be divided in two parts, 55255 and 600, that added together give a palindrome (55855).

The spelling of 55255600 in words is "fifty-five million, two hundred fifty-five thousand, six hundred".