55511600 has 60 divisors (see below), whose sum is σ = 134716824. Its totient is φ = 21980160.

The previous prime is 55511587. The next prime is 55511611. The reversal of 55511600 is 611555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42152 + ... + 43448.

Almost surely, 2^55511600 is an apocalyptic number.

55511600 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 55511600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67358412).

55511600 is an abundant number, since it is smaller than the sum of its proper divisors (79205224).

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

55511600 is a wasteful number, since it uses less digits than its factorization.

55511600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 55511600 is about 7450.6107132234. The cubic root of 55511600 is about 381.4707545315.

The spelling of 55511600 in words is "fifty-five million, five hundred eleven thousand, six hundred".